add info about model version to full.gms

[LaviniaBaumstark]

Purpose of this PR

add info about model version to full.gms

Type of change

• Refactoring

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
• All automated model tests pass (FAIL 0 in the output of make test)

Further information (optional):

• Test runs are here:
• Comparison of results (what changes by this PR?):

[orichters]

Not sure. Should you add that to main.gms as well?

[LaviniaBaumstark]

it is added to the main.gms file in the output folder but not to the main.gms file on the top level

[orichters]

it is added to the main.gms file in the output folder but not to the main.gms file on the top level

maybe we should delete this information completely in main.gms and just keep a placeholder. * Last modification (input data): Wed Sep 28 10:35:42 2022 as it is stated now is a bit misleading :)

[orichters]

great!