Feat/improve controller config routes

[cardosofede]

No description provided.

[rapcmia]

• Setup with dashboard + emqx ✅
• Setup on source ✅

Run tests using hummingbot-api fastify

• Run GET /controllers/{controller_type}/{controller_name}/config/template
  • Test with invalid controller names returns controller configuration class for 'test only' not found ✅
  • All categories and controllers generated except generic’s basic_order_example and basic_order_open_close_example ✅
    
• Run POST /controllers/{controller_type}/{controller_name}/config/validate
  • When testing the endpoint, use the results from /config/template
  • Got and error "'dict' object has no attribute 'strip' ❌
    
    • To reproduce: Get the response from any controller from /config/template and use it to validate e.g directional_trading.dman_v3

[cardosofede]

@david-hummingbot @rapcmia test this wiht the mcp, on my end is working

[david-hummingbot]

I checked this with MCP and it's not able to reproduce the error - I think it's the way the config results are pasted.
Running the CURL command manually returns "Configuration is valid"

Had Gemini test through MCP to see if it can reproduce but it's not able to -

[cardosofede]

let's proceed