feat(targets): Targets now accept a batch_size_rows setting to configure how many rows are loaded in each record batch

[BuzzCutNorman]

This feature will allow target users the ability to set the batch size used to triggers a drain via the target's meltano confiig.

batch_size_rows: 100000

When a batch is full and a drain is triggered, the message logged will now state the size of the batch so the users has a visual confirmation that the batch size they configured is being utilized.

The code for this PR was pulled out of PR 1876.

Closes #2155

---

📚 Documentation preview 📚: https://meltano-sdk--2248.org.readthedocs.build/en/2248/

[codspeed-hq]

CodSpeed Performance Report

Merging #2248 will not alter performance

_{Comparing BuzzCutNorman:2155-target-set-batch-size-rows (ea048a5) with main (0285704)}

Summary

✅ 6 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (0285704) 88.54% compared to head (ea048a5) 88.56%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2248      +/-   ##
==========================================
+ Coverage   88.54%   88.56%   +0.01%     
==========================================
  Files          54       54              
  Lines        4724     4730       +6     
  Branches      920      921       +1     
==========================================
+ Hits         4183     4189       +6     
  Misses        380      380              
  Partials      161      161              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[BuzzCutNorman]

@pnadolny13 and @edgarrmondragon I broke out the code from pr 1876 that gives the user of a target the ability to set the batch size in rows which triggers a drain. Please take a look and let me know what you think.

[edgarrmondragon]

Thanks for taking the time for extracting this into its own PR @BuzzCutNorman!

[BuzzCutNorman]

@edgarrmondragon Thanks 🙏 for all of the comment and documentation edits. Loads better 🥳 than what I had. 🎉