feat: implement Jira OAuth integration and connector routes

- Added support for Jira OAuth with new environment variables for client ID, client secret, and redirect URI.
- Implemented Jira connector routes for OAuth flow, including authorization and callback handling.
- Enhanced Jira connector to support both OAuth 2.0 and legacy API token authentication methods.
- Updated Jira indexing logic to utilize OAuth credentials with auto-refresh capabilities.
- Removed outdated Jira UI components and adjusted frontend logic to reflect the new integration.

surfsense_backend/.env.example

@@ -50,6 +50,11 @@ DISCORD_CLIENT_SECRET=your_discord_client_secret_here
 DISCORD_REDIRECT_URI=http://localhost:8000/api/v1/auth/discord/connector/callback
 DISCORD_BOT_TOKEN=your_bot_token_from_developer_portal
 
+# Jira OAuth Configuration
+JIRA_CLIENT_ID=our_jira_client_id
+JIRA_CLIENT_SECRET=your_jira_client_secret
+JIRA_REDIRECT_URI=http://localhost:8000/api/v1/auth/jira/connector/callback
+
 # OAuth for Linear Connector
 LINEAR_CLIENT_ID=your_linear_client_id
 LINEAR_CLIENT_SECRET=your_linear_client_secret