[DPG] tpcSkimsTableCreator: read IR source from CCDB, fix nclPID definition

[lubynets]

1. IR source is read from CCDB automatically in runtime (using timestamp of the first BC), so there is no need to provide irSource configurable anymore;
2. Fixed nclPID definition

Tagging @amaringarcia

[github-actions]

O2 linter results: ❌ 1 errors, ⚠️ 0 warnings, 🔕 0 disabled

[lubynets]

Convert to draft to add reading the $\sqrt{s_{\mathrm{NN}}}$ from CCDB (if possible).