Added rewrites involving block diagonal matrices

[tanish1729]

Description

Added the following rewrites :

• diag(block_diag(*sub_matrices)) -> concatenate(diag(sub_matrices))
• det(block_diag(*sub_matrices)) -> prod(det(sub_matrices))
• slogdet(block_diag(*sub_matrices)) -> prod(sign(a), sign(b), sign(c),...), sum(logdet(a), logdet(b), logdet(c),....)

Related Issue

• Related to ENH: Implement COLA library rewrites for linear algebra functions #573

Checklist

• Checked that the pre-commit linting/style checks pass
• Included tests that prove the fix is effective or that the new feature works
• Added necessary documentation (docstrings and/or example notebooks)
• If you are a pro: each commit corresponds to a relevant logical change

Type of change

• New feature / enhancement
• Bug fix
• Documentation
• Maintenance
• Other (please specify):

[twiecki]

You need to rebase.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.74%. Comparing base (1a1c62b) to head (fa7d9da).
Report is 133 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #967      +/-   ##
==========================================
+ Coverage   81.73%   81.74%   +0.01%     
==========================================
  Files         182      182              
  Lines       47633    47663      +30     
  Branches    11604    11622      +18     
==========================================
+ Hits        38934    38964      +30     
+ Misses       6509     6507       -2     
- Partials     2190     2192       +2     

Files with missing lines	Coverage Δ
pytensor/tensor/rewriting/linalg.py	92.48% <100.00%> (+0.81%)	⬆️

... and 2 files with indirect coverage changes