feat(cli): add logs cmd (#21430)

This PR adds a command to view the provisioner and agent logs for a
given workspace.
Note: I did investigate using the existing `cliui` methods to tail the
logs but they are tailored to a very specific use-case.

Other changes:
- Adds `Agents` to `dbfake.WorkspaceResponse`
- Adds methods to generate provisioner and agent logs in `dbgen`

---------

Co-authored-by: Steven Masley <Emyrk@users.noreply.github.com>

docs/reference/cli/logs.md

@@ -0,0 +1,36 @@
+<!-- DO NOT EDIT | GENERATED CONTENT -->
+# logs
+
+View logs for a workspace
+
+## Usage
+
+```console
+coder logs [flags] <workspace>
+```
+
+## Description
+
+```console
+View logs for a workspace
+```
+
+## Options
+
+### -n, --build-number
+
+|         |                  |
+|---------|------------------|
+| Type    | <code>int</code> |
+| Default | <code>0</code>   |
+
+Only show logs for a specific build number. Defaults to 0, which maps to the most recent build (build numbers start at 1). Negative values are treated as offsets—for example, -1 refers to the previous build.
+
+### -f, --follow
+
+|         |                    |
+|---------|--------------------|
+| Type    | <code>bool</code>  |
+| Default | <code>false</code> |
+
+Follow logs as they are emitted.