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 -->

cli/testdata/coder_templates_--help.golden

@@ -23,6 +23,7 @@ SUBCOMMANDS:
     edit        Edit the metadata of a template by name.
     init        Get started with a templated template.
     list        List all the templates available for the organization
+    presets     Manage presets of the specified template
     pull        Download the active, latest, or specified version of a template
                 to a path.
     push        Create or update a template from the current directory or as

cli/testdata/coder_templates_presets_--help.golden

@@ -0,0 +1,24 @@
+coder v0.0.0-devel
+
+USAGE:
+  coder templates presets
+
+  Manage presets of the specified template
+
+  Aliases: preset
+
+    - 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:
+    list    List all presets of the specified template. Defaults to the active
+            template version.
+
+———
+Run `coder --help` for a list of global options.

cli/testdata/coder_templates_presets_list_--help.golden

@@ -0,0 +1,24 @@
+coder v0.0.0-devel
+
+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.
+
+———
+Run `coder --help` for a list of global options.