feat: add project key support for Jira analytics

- Introduced `projectKey` and `ignoredProjects` fields in Jira configuration to enhance analytics capabilities.
- Implemented project validation logic in `JiraConfigClient` and integrated it into the `JiraConfigForm` for user input.
- Updated `IntegrationsSettingsPageClient` to display analytics dashboard link based on the configured project key.
- Enhanced API routes to handle project key in Jira sync and user preferences.
- Marked related tasks as complete in `TODO.md`.

hooks/useJiraConfig.ts

@@ -55,7 +55,9 @@ export function useJiraConfig() {
           baseUrl: '',
           email: '',
           apiToken: '',
-          enabled: false
+          enabled: false,
+          projectKey: '',
+          ignoredProjects: []
         });
         return { success: true, message: response.message };
       } else {