Unify process package into data

[amrit110]

PR Type ([Feature | Fix | Documentation | Test])

Refactor/Unify packages

Short Description

• Merge process package into data package.
• Remove slice method in Features since that will be handled by the slicer/HF datasets

Tests Added

...

[codecov]

Codecov Report

Merging #519 (70c368c) into main (ae2092a) will decrease coverage by 0.06%.
Report is 1 commits behind head on main.
The diff coverage is 93.33%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #519      +/-   ##
==========================================
- Coverage   64.83%   64.77%   -0.06%     
==========================================
  Files          94       93       -1     
  Lines        9248     9227      -21     
==========================================
- Hits         5996     5977      -19     
+ Misses       3252     3250       -2     

Files	Coverage Δ
cyclops/data/aggregate.py	75.34% <100.00%> (ø)
cyclops/data/clean.py	95.55% <100.00%> (ø)
cyclops/data/constants.py	100.00% <ø> (ø)
cyclops/data/df/normalize.py	86.98% <100.00%> (ø)
cyclops/data/df/split.py	98.87% <100.00%> (ø)
cyclops/data/diagnoses.py	79.41% <100.00%> (ø)
cyclops/data/impute.py	80.39% <100.00%> (ø)
cyclops/data/string_ops.py	91.80% <100.00%> (ø)
cyclops/data/utils.py	65.21% <100.00%> (+24.04%)	⬆️
cyclops/data/df/feature.py	72.37% <90.00%> (ø)
... and 2 more