chore: add ignore patterns for temp and env files

Adds several patterns to .gitignore to exclude temporary files, environment files, beam files, sync files, and codemap files. This prevents these files from being committed to the repository.

.gitignore

@@ -14,4 +14,16 @@ wheels/
 .mypy_cache
 
 # Environment variables
-.env
+.env
+
+# Beam
+.beamignore
+
+# Sync Dir
+gte_qwen2_m2v
+code_model2vec
+logs
+
+# codemap
+documentation
+*.bak