feat: GeoModel conversion for TGC, sTGC and MicroMega

[Berggren-Jonas]

This PR adds some additional usability to my previous one. I added a GeoSimplePolygonBrep converter for the conversion of (s)TGCs. In addition I added unit testing for the conversion of GeoTube, GeoTrd and GeoSimplePolygonBrep with four and six vertices.

Here are some examples of the converter:
python3 geomodel_vol.py -i ~/ATLAS-R3-MUONTEST_v3.db -q Muon --output-obj -o muons -n MM actMicroMegaGas yields

For (s)TGCs we can use python3 geomodel_vol.py -i ~/ATLAS-R3-MUONTEST_v3.db -q Muon --output-obj -o muons -n TGC TgcGas to get

[dimitra97]

Some comments that were left in the code...otherwise looks good!
@Berggren-Jonas I see some things are commonly touched here and also in the new pr #3576 that is now draft. I guess we should merge this one first and then pull and adapt it to your other recent pr :) so maybe some of my comments are common here and there

[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
60.1% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[acts-project-service]

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status	job	report
🟢	report_pull_request
🟢	run_art_test: test_data18_13TeV_1000evt
🟢	run_art_test: test_ttbarPU40_reco
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