chore: move udf registration to better place

[rluvaton]

Which issue does this PR close?

N/A

Rationale for this change

Some registration exists in the prepare_datafusion_session_context and some in the PhysicalPlanner::new, moved to a single place - prepare_datafusion_session_context

What changes are included in this PR?

1. Move SparkExpm1 udf registration to prepare_datafusion_session_context
2. Move all Comet Spark UDFs like SparkBitwiseNot, SparkBitwiseCount, etc to register in register_all_comet_functions inside the spark-expr crate

How are these changes tested?

Existing tests

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 58.90%. Comparing base (f09f8af) to head (9bc7e05).
Report is 266 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1899      +/-   ##
============================================
+ Coverage     56.12%   58.90%   +2.77%     
- Complexity      976     1149     +173     
============================================
  Files           119      130      +11     
  Lines         11743    12827    +1084     
  Branches       2251     2413     +162     
============================================
+ Hits           6591     7556     +965     
- Misses         4012     4048      +36     
- Partials       1140     1223      +83     

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