feat(cli): add CLI support for listing presets (#18910)

## Description 

This PR introduces a new `list presets` command to display the presets
associated with a given template.
By default, it displays the presets for the template's active version,
unless a `--template-version` flag is provided.

## Changes

* Added a new `list presets` command under `coder templates presets` to
display presets associated with a template.
* By default, the command lists presets from the template’s active
version.
* Users can override the default behavior by providing the
`--template-version` flag to target a specific version.

```
> coder templates versions presets list --help

USAGE:
  coder templates presets list [flags] <template>

  List all presets of the specified template. Defaults to the active template version.

OPTIONS:
  -O, --org string, $CODER_ORGANIZATION
          Select which organization (uuid or name) to use.

  -c, --column [name|parameters|default|desired prebuild instances] (default: name,parameters,default,desired prebuild instances)
          Columns to display in table output.

  -o, --output table|json (default: table)
          Output format.

      --template-version string
          Specify a template version to list presets for. Defaults to the active version.
```

Related PR: https://github.com/coder/coder/pull/18912 - please consider
both PRs together as they’re part of the same workflow
Relates to issue: https://github.com/coder/coder/issues/16594

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Added CLI commands to manage and list presets for specific template
versions, supporting tabular and JSON output.
* Introduced a new CLI subcommand group for template version presets,
including detailed help and documentation.
* Added support for displaying and managing the desired number of
prebuild instances for presets in CLI, API, and UI.

* **Documentation**
* Updated and expanded CLI and API documentation to describe new
commands, options, and the desired prebuild instances field in presets.
* Added new help output and reference files for template version presets
commands.

* **Bug Fixes**
* Ensured correct handling and display of the desired prebuild instances
property for presets across CLI, API, and UI.

* **Tests**
* Introduced end-to-end tests for listing template version presets,
covering scenarios with and without presets.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

docs/reference/cli/templates.md

@@ -33,6 +33,7 @@ workspaces:
 | [<code>list</code>](./templates_list.md)         | List all the templates available for the organization                            |
 | [<code>push</code>](./templates_push.md)         | Create or update a template from the current directory or as specified by flag   |
 | [<code>versions</code>](./templates_versions.md) | Manage different versions of the specified template                              |
+| [<code>presets</code>](./templates_presets.md)   | Manage presets of the specified template                                         |
 | [<code>delete</code>](./templates_delete.md)     | Delete templates                                                                 |
 | [<code>pull</code>](./templates_pull.md)         | Download the active, latest, or specified version of a template to a path.       |
 | [<code>archive</code>](./templates_archive.md)   | Archive unused or failed template versions from a given template(s)              |

docs/reference/cli/templates_presets.md

@@ -0,0 +1,32 @@
+<!-- DO NOT EDIT | GENERATED CONTENT -->
+# templates presets
+
+Manage presets of the specified template
+
+Aliases:
+
+* preset
+
+## Usage
+
+```console
+coder templates presets
+```
+
+## Description
+
+```console
+  - List presets for the active version of a template:
+
+     $ coder templates presets list my-template
+
+  - List presets for a specific version of a template:
+
+     $ coder templates presets list my-template --template-version my-template-version
+```
+
+## Subcommands
+
+| Name                                             | Purpose                                                                              |
+|--------------------------------------------------|--------------------------------------------------------------------------------------|
+| [<code>list</code>](./templates_presets_list.md) | List all presets of the specified template. Defaults to the active template version. |

docs/reference/cli/templates_presets_list.md

@@ -0,0 +1,47 @@
+<!-- DO NOT EDIT | GENERATED CONTENT -->
+# templates presets list
+
+List all presets of the specified template. Defaults to the active template version.
+
+## Usage
+
+```console
+coder templates presets list [flags] <template>
+```
+
+## Options
+
+### --template-version
+
+|      |                     |
+|------|---------------------|
+| Type | <code>string</code> |
+
+Specify a template version to list presets for. Defaults to the active version.
+
+### -O, --org
+
+|             |                                  |
+|-------------|----------------------------------|
+| Type        | <code>string</code>              |
+| Environment | <code>$CODER_ORGANIZATION</code> |
+
+Select which organization (uuid or name) to use.
+
+### -c, --column
+
+|         |                                                                      |
+|---------|----------------------------------------------------------------------|
+| Type    | <code>[name\|parameters\|default\|desired prebuild instances]</code> |
+| Default | <code>name,parameters,default,desired prebuild instances</code>      |
+
+Columns to display in table output.
+
+### -o, --output
+
+|         |                          |
+|---------|--------------------------|
+| Type    | <code>table\|json</code> |
+| Default | <code>table</code>       |
+
+Output format.