ctk load table: Add support for MongoDB Change Streams

[amotl]

About

Converge MongoDB CDC events into CrateDB table, using the universal ctk load table interface.

Documentation

Preview: https://cratedb-toolkit--196.org.readthedocs.build/io/mongodb/cdc.html

References

• Transform: MongoDB CDC event to CrateDB SQL commons-codec#4

Backlog

• Documentation
• Software tests

[codecov]

Codecov Report

Attention: Patch coverage is 36.53846% with 33 lines in your changes missing coverage. Please review.

Project coverage is 81.11%. Comparing base (302c44f) to head (b148a12).
Report is 3 commits behind head on main.

Files	Patch %	Lines
cratedb_toolkit/io/mongodb/cdc.py	38.46%	16 Missing ⚠️
cratedb_toolkit/io/mongodb/api.py	18.18%	9 Missing ⚠️
cratedb_toolkit/api/main.py	33.33%	6 Missing ⚠️
cratedb_toolkit/model.py	66.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #196      +/-   ##
==========================================
- Coverage   81.76%   81.11%   -0.65%     
==========================================
  Files          79       80       +1     
  Lines        3213     3257      +44     
==========================================
+ Hits         2627     2642      +15     
- Misses        586      615      +29     

Flag	Coverage Δ
influxdb	30.42% <0.00%> (-0.42%)	⬇️
main	59.22% <7.69%> (-0.75%)	⬇️
mongodb	39.17% <36.53%> (-0.07%)	⬇️
pymongo	41.78% <0.00%> (-0.58%)	⬇️

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[amotl]

Hi. We are intending to merge this soon, in this case without software tests, and eventually acknowledged by timeout, in order to slot it into that other PR as early as possible, in order to ship it timely.

• Migration: Add page about Rockset cratedb-guide#98

It still makes sense to review in retrospective if you have a few spare cycles, because any suggestions will be happily taken into consideration.