TLK-2361 - Tools preamble extension

[EugeneLightsOn]

Improving chat responses using preambles

AI Description

This PR introduces a new feature called USE_TOOLS_PREAMBLE to enhance the model's tool usage. It involves several changes across multiple files:

• src/backend/config/settings.py:
  • A new field use_tools_preamble is added to the ToolSettings class, with a default value of False.
• src/backend/config/configuration.template.yaml:
  • The use_tools_preamble field is added with a value of true.
• src/backend/chat/custom/custom.py:
  • The generate_tools_preamble function is imported from backend.services.chat.
  • A new conditional block is added to the call_chat function, which sets the chat_request.preamble using the generate_tools_preamble function if chat_request.tools is not empty and the tools.use_tools_preamble setting is enabled.
• src/backend/services/chat.py:
  • A new function generate_tools_preamble is added, which constructs and returns a preamble string based on the available tools and the provided chat_request.
• src/backend/tools/base.py:
  • A new class BaseToolPreambleRegistry is introduced to store default preamble values for tools.
  • The class provides methods to set and retrieve default preambles for tool classes.
  • The BaseTool class is updated to automatically set the TOOL_DEFAULT_PREAMBLE attribute for child classes using the BaseToolPreambleRegistry.
• .env-template:
  • A new line USE_TOOLS_PREAMBLE=True is added to enable the use of the tools preamble.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 57.14286% with 12 lines in your changes missing coverage. Please review.

Project coverage is 77.91%. Comparing base (839f258) to head (51412a5).

Files with missing lines	Patch %	Lines
src/backend/services/chat.py	9.09%	10 Missing ⚠️
src/backend/chat/custom/custom.py	75.00%	1 Missing ⚠️
src/backend/tools/base.py	91.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #876      +/-   ##
==========================================
- Coverage   77.97%   77.91%   -0.06%     
==========================================
  Files         259      259              
  Lines       11123    11150      +27     
==========================================
+ Hits         8673     8688      +15     
- Misses       2450     2462      +12     

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