allow gamscompile to get input data, update regexp in main.gms

[orichters]

Purpose of this PR

• make sure --gamscompile also adjusts the sets and also input data if required, to make sure also H21 runs can be checked and tests can be extended
• I moved updateSets() into its own function and created updateInputData() which will then be called by prepare.R
• call these functions also from runGamsCompile
• some additions to regexp tests as introduced in reactive check_config, add regexp check for cfg$… values #1356
• unfortunately, I had to take out some more files out of the compilation tests because some scenarios fail to compile now. But we can fix that later --> configs that fail start.R --gamscompile #1367

Type of change

• Refactoring
• New feature

Checklist:

• My code follows the coding etiquette
• I performed a self-review of my own code
• I explained my changes within the PR, particularly in hard-to-understand areas
• I checked that the in-code documentation is up-to-date
• All automated model tests pass (FAIL 0 in the output of make test and make test-full)
• The changelog CHANGELOG.md has been updated correctly

[LaviniaBaumstark]

I like splitting out the functions updateSets() and updateInputData()