feat: adding chunking feature, adding preview and partial accepting

.chatgpt_config.yaml

@@ -1,9 +1,21 @@
 project_name: "chatgpt_nvim"
 default_prompt_blocks:
   - "basic-prompt"
+  - "workflow-prompt"
 directories:
   - "."
 initial_files:
   - "README.md"
-  - "lua"
 debug: false
+
+# New config flags:
+preview_changes: true
+interactive_file_selection: true
+partial_acceptance: true
+improved_debug: true
+
+# We rely on token_limit to decide chunk sizes
+token_limit: 3000
+
+# Enable chunking if we exceed the token limit
+enable_chunking: true