CLI: Naming cleanup

[tony]

Purely copy tweaks, except for sync, which has a kwarg update.

Since sync() has a param change, even though its an internal API, I will bump version for this

[codecov]

Codecov Report

Merging #404 (62f8d0d) into master (efb0bf7) will not change coverage.
The diff coverage is 50.00%.

❗ Current head 62f8d0d differs from pull request most recent head 1fe36d0. Consider uploading reports for the commit 1fe36d0 to get more accurate results

@@           Coverage Diff           @@
##           master     #404   +/-   ##
=======================================
  Coverage   85.04%   85.04%           
=======================================
  Files          15       15           
  Lines         849      849           
  Branches      130      130           
=======================================
  Hits          722      722           
  Misses         87       87           
  Partials       40       40           

Impacted Files	Coverage Δ
src/vcspull/cli/sync.py	73.23% <42.85%> (ø)
tests/test_cli.py	88.23% <100.00%> (ø)

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