feat(agent_builder): Add `beautifyString` util function

[kcze]

Add beautifyString util function that reformats backend names to user friendly names in the frontend using regex patterns.

• Add space before capital letters
• Add space between acronyms and next word
• Replace underscores with spaces
• Capitalize the first letter of each word
• Handle exceptions:
  • Auto GPT -> AutoGPT
  • Gpt -> GPT
  • Creds -> Credentials
  • Id -> ID
  • Openai -> OpenAI
  • Api -> API
  • Url -> URL
  • Http -> HTTP
  • Json -> JSON

Example: AutoGPTAgentBlock -> AutoGPT Agent Block, `