Add misZ score evaluation for PP2 and BP1

[gromdimon]

Issue:

• Closes Reimplement PP2 to use missense z score #183

Description:

• Implement
• Test
• Document

[codecov]

Codecov Report

Attention: Patch coverage is 71.42857% with 6 lines in your changes missing coverage. Please review.

Project coverage is 86.87%. Comparing base (e1b0594) to head (1803b0a).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/seqvar/auto_pp2_bp1.py	71.42%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #207      +/-   ##
==========================================
+ Coverage   86.68%   86.87%   +0.19%     
==========================================
  Files          65       65              
  Lines        5631     5640       +9     
==========================================
+ Hits         4881     4900      +19     
+ Misses        750      740      -10     

Files with missing lines	Coverage Δ
src/defs/auto_acmg.py	99.64% <ø> (ø)
src/seqvar/auto_pp2_bp1.py	83.75% <71.42%> (+16.14%)	⬆️