XAssist - add model freedom and ollama support

[tharun571]

Description

• Users can now select and use a specific model within their respective LLM.
• Users can set the URL for Ollama and can add a model and utilize the LLM.
• Updated the documentation to reflect the new features and changes.
• Added tests for the new Ollama support.

Type of change

Please tick all options which are relevant.

• Bug fix
• New feature
• Added/removed dependencies
• Required documentation updates

[anutosh491]

The failing CI (installing mamba/ micromamba) is due to the new release
Pinning the version should fix it

- uses: mamba-org/setup-micromamba@v1
  with:
    micromamba-version: '1.5.10-0'

Let's do this for now, untill the issue is fixed

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 47.61905% with 44 lines in your changes missing coverage. Please review.

Project coverage is 75.26%. Comparing base (28eed52) to head (d9c7c1e).

Files with missing lines	Patch %	Lines
src/xmagics/xassist.cpp	47.61%	44 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #156      +/-   ##
==========================================
- Coverage   81.97%   75.26%   -6.71%     
==========================================
  Files          19       19              
  Lines         760      837      +77     
  Branches       79       91      +12     
==========================================
+ Hits          623      630       +7     
- Misses        137      207      +70     

Files with missing lines	Coverage Δ
src/xmagics/xassist.cpp	54.28% <47.61%> (-26.17%)	⬇️

Files with missing lines	Coverage Δ
src/xmagics/xassist.cpp	54.28% <47.61%> (-26.17%)	⬇️

[anutosh491]

Technically any utility function like these should be tested for (either in test_interpreter.cpp itself or maybe through a test_utils.cpp if possible)

But that can be done through subsequent PRs (an issue can be opened to track the same) !

[anutosh491]

Clang-tidy reviews should be addressed. Apart from that it LGTM.

I would just wait for the green flag by @vgvassilev before merging !

[vgvassilev]

LGTM, let's ignore the infrastructure issue of the clang-tidy bot.