(feat) Adds string row-wise operations to RemoteLazyFrame

[kbamponsem]

This PR adds a few methods on the RemoteLazyFrame and also adds another instruction to the CompositePlan, StringUdfPlanSegement.

The following are the string methods added

contains match replace replace_all to_uppercase to_lowercase fuzzy_match extract extract_all findall split

Also, unittests are added for all the functions.

[github-actions[bot]]

☂️ Python Cov

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
382	369	97%	0%	🟢

New Files

File	Coverage	Status
tests/test_rdf_string_ops.py	99%	🟢
TOTAL	99%	🟢

Modified Files

No covered modified files...

updated for commit: 9ab521b by action🐍

[dhalf]

We are going to rewrite serialization classes with serde, until this is done, this PR is blocked as it involves lots of new such classes