feat(cli): include license status in support bundle (#18472)

Closes #18207

This PR adds license status to support bundle to help with
troubleshooting license-related issues.

- `license-status.txt`, is added to the support bundle.
    - it contains the same output as the `coder license list` command.
- license output formatter logic has been extracted into a separate
function.
- this allows it to be reused both in the `coder license list` cmd and
in the support bundle generation.

cli/support_test.go

@@ -386,6 +386,9 @@ func assertBundleContents(t *testing.T, path string, wantWorkspace bool, wantAge
 		case "cli_logs.txt":
 			bs := readBytesFromZip(t, f)
 			require.NotEmpty(t, bs, "CLI logs should not be empty")
+		case "license-status.txt":
+			bs := readBytesFromZip(t, f)
+			require.NotEmpty(t, bs, "license status should not be empty")
 		default:
 			require.Failf(t, "unexpected file in bundle", f.Name)
 		}