Added documenttations for 1. Setting up LM Studio 2. Setting up Ollam…

[anujchoudhary-17]

docs: convert Notion templates into .md files for GitHub

• Added proper documentation structure in markdown format
• Migrated "Local Models Guide" sections:
  • Setting-up LM Studio with BrowserOS
  • Setting-up Ollama with BrowserOS
  • Using LM Studio + OpenAI’s gpt-oss

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