feat: add triallelic_sites and variants with MaxDepth

[khurrammaqbool]

This PR:

Added: triallelic_sites and variants with MaxDepth.

Review and tests:

• Tests pass
• Code review
• New code is executed and covered by tests, and test approve

[codecov]

Codecov Report

Base: 99.25% // Head: 99.25% // No change to project coverage 👍

Coverage data is based on head (51a4720) compared to base (fd1416b).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1021   +/-   ##
========================================
  Coverage    99.25%   99.25%           
========================================
  Files           28       28           
  Lines         1747     1747           
========================================
  Hits          1734     1734           
  Misses          13       13           

Flag	Coverage Δ
unittests	99.25% <ø> (ø)

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[ivadym]

👍 🥇