SAS Packages Framework, version `20260602`
Changes:
- New macro: `%requestPackage()`;
- Error fix for `githubRepo=` selection in the `%installPackage()` macro;
- check for already loaded packages added to the `%loadPackage()` macro to avoid unnecessary re-loading;
- update in `CMPLIB` cleaning for the `%unloadPacjkage()` macro.
Bart Jablonski