Add gdlint and gdformat scripts

CLAUDE.md

@@ -1,7 +1,9 @@
-- The documentation of the project is located in docs/ directory.
+- The documentation of the project is located in docs/ directory;
 - Get following files in context before doing anything else:
   - docs\CLAUDE.md
   - docs\CODE_OF_CONDUCT.md
   - project.godot
-- Use TDD methodology for development
-- Keep documentation up to date
+- Use TDD methodology for development;
+- Use static data types;
+- Keep documentation up to date;
+- Always run gdlint, gdformat and run tests;