feat(mdk): overridable templates

[Natoandro]

Solve MET-630

• Make templates in the static sections overridable
  • mdk_rust
  • mdk_python
  • mdk_typescript
• Add a CLI tool to generate extract the default template

Migration notes

No changes needed.

---

• The change comes with new or modified tests
• Hard-to-understand functions have explanatory comments
• End-user documentation is updated to reflect the change

[linear]

MET-630 (gen) add parameter to replace static sections

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.21%. Comparing base (70a4d49) to head (ad3dfdd).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #842      +/-   ##
==========================================
- Coverage   76.41%   76.21%   -0.20%     
==========================================
  Files         144      144              
  Lines       16705    16705              
  Branches     1645     1642       -3     
==========================================
- Hits        12765    12732      -33     
- Misses       3921     3954      +33     
  Partials       19       19              

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