🚸 Make source code searchable

[falexwolf]

This change enables searchability of source code both on the hub and in lamindb by treating source code in the same way as metadata (say ontology descriptions). transform.source_code gets stored in a Text column in Postgres/SQLite. By all realistic calculations, this will never lead to scalability issues.

Also, we're now

• using the py:percent format for notebooks for a cleaner representation of transform.source_code
• stripping the notebook title both from run reports and source code to de-duplicate with the transform.name field (so that these can no longer get out-of-sync)

Needs:

• ♻️ Store source code in the database, not on S3 lamin-cli#64

Comes with:

• https://github.com/laminlabs/laminhub/pull/1181
• https://github.com/laminlabs/laminhub/pull/1138

Internal Slack discussion.

[codecov]

Codecov Report

Attention: Patch coverage is 95.65217% with 3 lines in your changes missing coverage. Please review.

Project coverage is 92.29%. Comparing base (5096bb0) to head (45fb3f7).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
lamindb/_finish.py	96.66%	2 Missing ⚠️
lamindb/core/_context.py	88.88%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1855   +/-   ##
=======================================
  Coverage   92.28%   92.29%           
=======================================
  Files          52       52           
  Lines        5938     5970   +32     
=======================================
+ Hits         5480     5510   +30     
- Misses        458      460    +2     

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[github-actions]

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