Added additional outputs to PEP engine

[Alexander-Sol]

Tiny PR that changes the PEP output written to Results.txt. Now, the number of targets and decoys used for training are reported

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 93.67%. Comparing base (8c8fe5f) to head (94302f5). Report is 1 commits behind head on master.

Additional details and impacted files

[](https://app.codecov.io/gh/smith-chem-wisc/MetaMorpheus/pull/2424?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=smith-chem-wisc) ```diff @@ Coverage Diff @@ ## master #2424 +/- ## ======================================= Coverage 93.67% 93.67% ======================================= Files 141 141 Lines 21925 21930 +5 Branches 3007 3007 ======================================= + Hits 20539 20544 +5 Misses 934 934 Partials 452 452 ``` | [Files with missing lines](https://app.codecov.io/gh/smith-chem-wisc/MetaMorpheus/pull/2424?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=smith-chem-wisc) | Coverage Δ | | |---|---|---| | [...pheus/EngineLayer/FdrAnalysis/PEPAnalysisEngine.cs](https://app.codecov.io/gh/smith-chem-wisc/MetaMorpheus/pull/2424?src=pr&el=tree&filepath=MetaMorpheus%2FEngineLayer%2FFdrAnalysis%2FPEPAnalysisEngine.cs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=smith-chem-wisc#diff-TWV0YU1vcnBoZXVzL0VuZ2luZUxheWVyL0ZkckFuYWx5c2lzL1BFUEFuYWx5c2lzRW5naW5lLmNz) | `95.07% <100.00%> (+0.03%)` | :arrow_up: |