docs: concepts folder

[mendonk]

This pull request includes significant changes to the documentation for components and the API pane.

• Components Overview: The content from components-overview.md has been moved and expanded in a new file concepts-components.md. This includes detailed explanations of component functionalities, menus, ports, and code examples. [1] [2]

• Component Code Example: Added a detailed example of a RecursiveCharacterTextSplitterComponent class, explaining its inputs, methods, and usage within a flow.

[edwinjosechittilappilly]

This may not be correct! Might require testing
Component wise session id would be inside the tweaks of respective components.

[mendonk]

@edwinjosechittilappilly

Like this:

curl -X POST "http://127.0.0.1:7860/api/v1/run/$FLOW_ID" \   
   -H 'Content-Type: application/json' \
   -d '{
       "tweaks": {
           "session_id": "custom_session_123"
       },
       "input_value": "message",
       "input_type": "chat",
       "output_type": "chat"
   }'
{"session_id":"801abb1e-19b9-4278-9632-179b6d84f126","outputs":[{"inputs":{"input_value":"message"},"outputs":[{"results":{"message":{"text_key":"text","data":{"timestamp":"2025-01-10 15:34:27","sender":"Machine","sender_name":"AI","session_id":"801abb1e-19b9-4278-9632-179b6d84f126","text":"Absolutely! It sounds like you're ready to dive into something exciting. What kind of project or idea do you have in mind? Whether it's a new app, a creative writing piece, or even a machine learning model, I'm here to help you brainstorm, plan, and get started. Let’s turn your vision into reality!","files":[],"error":"False","edit":"False","properties":{"text_color":"","background_color":"","edited":"False","source":{"id":"OpenAIModel-Uksag","display_name":"OpenAI","source":"gpt-4o-mini"},"icon":"OpenAI","allow_markdown":"False","positive_feedback":"None","state":"complete","targets":[]},