`-` in project name breaks the template janitor about cmake_conan_boilerplate_template

[LtdSauce]

Maybe we should try and catch more naming issues with this one. So far i found out, that it is possible to include the following symbols in github repository names:

• .: Obviousyl this will break a lot when used in C++ code
• -: Already mentioned, not allowed in C++ identifier
• preceding the name with numbers: Not allowed in C++ identifier
• preceding the name with one or more underscores: Reserved in C++ identifier
• tbc..?

As the . is an easy catch, i will include that one in my PR for tonight. The other cases have to be postpowned on my side.

Many of the special symbols like !"§$%&/?, will be converted by github into - either way. So we don't have to care about them.

[LtdSauce]

I'll try to work on this this evening when the kids are in bed :)

[lefticus]

I'll try to work on this this evening when the kids are in bed :)

Thanks, if you can!

Right now I'm collecting and triaging a bunch of issues found by my game-jam participants.