feat: support bundle updates to enable pprof and telemetry collection (#21486)

- Adds pprof collection support now that we have the listeners
automatically starting (requires Coder server 2.28.0+, includes a
version check). Collects heap, allocs, profile (30s), block, mutex,
goroutine, threadcreate, trace (30s), cmdline, symbol. Performs capture
for 30 seconds and emits a log line stating as such. Enable capture by
supplying the `--pprof` flag or `CODER_SUPPORT_BUNDLE_PPROF` env var.
Collection of pprof data from both coderd and the Coder agent occurs.
- Adds collection of Prometheus metrics, also requires 2.28.0+
- Adds the ability to include a template in the bundle independently of
supplying the details of a running workspace by supplying the
`--template` flag or `CODER_SUPPORT_BUNDLE_TEMPLATE` env var
- Captures a list of workspaces the user has access to. Defaults to a
max of 10, configurable via `--workspaces-total-cap` /
`CODER_SUPPORT_BUNDLE_WORKSPACES_TOTAL_CAP`
- Collects additional stats from the coderd deployment (aggregated
workspace/session metrics), as well as entitlements via license and
dismissed health checks.

created with help from mux

cli/testdata/coder_support_bundle_--help.golden

@@ -14,10 +14,23 @@ OPTIONS:
           File path for writing the generated support bundle. Defaults to
           coder-support-$(date +%s).zip.
 
+      --pprof bool, $CODER_SUPPORT_BUNDLE_PPROF
+          Collect pprof profiling data from the Coder server and agent. Requires
+          Coder server version 2.28.0 or newer.
+
+      --template string, $CODER_SUPPORT_BUNDLE_TEMPLATE
+          Template name to include in the support bundle. Use
+          org_name/template_name if template name is reused across multiple
+          organizations.
+
       --url-override string, $CODER_SUPPORT_BUNDLE_URL_OVERRIDE
           Override the URL to your Coder deployment. This may be useful, for
           example, if you need to troubleshoot a specific Coder replica.
 
+      --workspaces-total-cap int, $CODER_SUPPORT_BUNDLE_WORKSPACES_TOTAL_CAP
+          Maximum number of workspaces to include in the support bundle. Set to
+          0 or negative value to disable the cap. Defaults to 10.
+
   -y, --yes bool
           Bypass confirmation prompts.