split pm_fedem into industry and buildings

[fbenke-pik]

Purpose of this PR

• Read in FE demands for industry and buildings files separately. Instead of one FE demand file with industry and buildings demands for all SPPS and an additional redundant buildings FE demand file containing an additional RCP dimension (and overlapping with FE demand for RCP = none), read in two separate files and treat the FE demands for the two sectors separately just like for transport.
• Related mrremind PR: resolve calcFEdemand pik-piam/mrremind#803
• The FE demand for transport gets a parameter name according to naming conventions.
• if-conditions checking for the right realization for buildings/transport/industry are dropped, because each of them currently has only one realization.

Type of change

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Parts concerned

• ☑️ GAMS Code
• ◻️ R-scripts
• ◻️ Documentation (GAMS incode documentation, comments, tutorials)
• ☑️ Input data / CES parameters
• ◻️ Tests, CI/CD (continuous integration/deployment)
• ◻️ Configuration (switches in main.gms, default.cfg, and scenario_config*.csv files)
• ◻️ Other (please give a description)

Impact

• ◻️ Bug fix
• ☑️ Refactoring
• ◻️ New feature
• ◻️ Change of parameter values or input data (including CES parameters)
• ◻️ Minor change (default scenarios show only small differences)
• ◻️ Fundamental change of results of default scenarios

Checklist

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In the end all checkboxes must be ticked before you can merge.

• I executed the automated model tests (make test) after my final commit and all tests pass (FAIL 0)
• I adjusted the reporting in remind2 if and where it was needed
• I adjusted the madrat packages (mrremind and other packages involved) for input data generation if and where it was needed
• My code follows the coding etiquette
• I explained my changes within the PR, particularly in hard-to-understand areas
• I checked that the in-code documentation is up-to-date
• I adjusted forbiddenColumnNames in readCheckScenarioConfig.R in case the PR leads to deprecated switches
• I updated the CHANGELOG.md correctly (added, changed, fixed, removed, input data/calibration)

Further information (optional)

• Runs with these changes are here:
• Comparison of results (what changes by this PR?):

[fbenke-pik]

else can be removed