✨ Add lazy import mechanism to enable model import before django setup

[ap--]

This add a lazy proxy mechanism that hooks into pythons import machinery to automatically create lazy class and function wrappers to defer import to when lamin is connected to an instance.

xref: laminlabs/lamindb#2849

[github-actions]

🚀 Deployed on https://6850ac3037f5175d1a11d5c2--lamindb-setup-htry.netlify.app

[codecov]

Codecov Report

Attention: Patch coverage is 25.90909% with 163 lines in your changes missing coverage. Please review.

Project coverage is 81.79%. Comparing base (4d615e1) to head (a408b8c).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
lamindb_setup/lazy_import.py	23.58%	162 Missing ⚠️
lamindb_setup/_connect_instance.py	87.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1064      +/-   ##
==========================================
- Coverage   84.65%   81.79%   -2.86%     
==========================================
  Files          44       46       +2     
  Lines        3753     3955     +202     
==========================================
+ Hits         3177     3235      +58     
- Misses        576      720     +144     

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