Refactoring diagnostic tests in multiple files.

server/lib/diagnostic/prosody.ts

@@ -0,0 +1,9 @@
+import { newResult, TestResult } from './utils'
+
+export async function diagProsody (test: string, _settingsManager: PluginSettingsManager): Promise<TestResult> {
+  const result = newResult(test)
+  result.ok = false
+  result.label = 'Builtin Prosody and ConverseJS'
+  result.messages.push('Not Implemented Yet')
+  return result
+}