feat: dedicated ai and template section with gitignore edits (#264)

dedicated ai and template section with gitignore edits

## Summary by Sourcery

Add dedicated AI and template section with gitignore edits, including
new documentation for blockchain and AI integration, AI code assistant,
and template libraries

New Features:
- Added comprehensive documentation for Model Context Protocol (MCP)
- Introduced RooCode AI assistant documentation
- Created template libraries section for EVM and Fabric smart contracts
- Added OpenAI nodes and pgvector integration guide

Documentation:
- Added detailed documentation for blockchain and AI integration
- Created new sections for AI code assistant and template libraries
- Expanded documentation on AI-powered workflows and smart contract
templates

Chores:
- Updated gitignore
- Added new abbreviations to formatting headings
- Organized new documentation sections

---------

Co-authored-by: Roderik van der Veer <roderik@settlemint.com>

Author: gyan-sharma

.gitignore

@@ -1,5 +1,6 @@
 # deps
 /node_modules
+.bun
 
 # generated content
 .contentlayer
@@ -22,6 +23,7 @@
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+bun.lockb
 
 # others
 .env*.local