✨ (openai) Add tools and functions support (#1167)

Closes #863

Got helped from #1162 for the implementation. Closing it in favor of
this PR.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Enhanced `CodeEditor` with additional properties for better form
control and validation.
- Introduced tools and functions in OpenAI integrations documentation
for custom JavaScript execution.
- Added capability to define and use custom JavaScript functions with
the OpenAI assistant.
- Expanded layout metadata options to include various input types and
languages.

- **Improvements**
- Updated the OpenAI actions to support new function execution features.

- **Documentation**
- Added new sections for tools and functions in the OpenAI integrations
guide.

- **Refactor**
- Refactored components and actions to integrate new features and
improve existing functionalities.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/forge/core/zod/extendWithTypebotLayout.ts

@@ -8,7 +8,8 @@ export interface ZodLayoutMetadata<
 > {
   accordion?: string
   label?: string
-  inputType?: 'variableDropdown' | 'textarea' | 'password'
+  inputType?: 'variableDropdown' | 'textarea' | 'password' | 'code'
+  lang?: 'javascript' | 'html' | 'css' | 'json'
   defaultValue?: T extends ZodDate ? string : TInferred
   placeholder?: string
   helperText?: string