chore(idea): add JetBrains project configuration files

Add XML configuration files for JetBrains IDE, including module setup, VCS mappings, Git blame settings, and Discord integration. This will help maintain consistent project settings for all developers using JetBrains IDEs.

.idea/.gitignore

@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml