static CES input file, working gamscompile

do what #1645 does, but better … stronger … faster

Checklist:

[x] My code follows the coding etiquette
[ ] I performed a self-review of my own code
[x] I explained my changes within the PR, particularly in hard-to-understand areas
[x] I checked that the in-code documentation is up-to-date
[x] I adjusted the reporting in remind2 where it was needed
[x] I adjusted forbiddenColumnNames in readCheckScenarioConfig.R in case the PR leads to deprecated switches
[x] All automated model tests pass (FAIL 0 in the output of make test)
[x] The changelog CHANGELOG.md has been updated correctly