Support parsing solution configuration mappings for projects which don't have a platform

[icnocop]

📫 Addressed Issue(s)

Closes #24

📄 Description

Support parsing solution configuration mappings for projects which don't have a platform

✅ Checks

• My PR adheres to the general code-style of this project (look at other code if you're unsure)
• My code requires changes to the documentation
• I have updated the documentation as required
• All the automated tests have passed

ℹ Additional Information

This PR requires #22 to be merged first.

[wgnf]

Hey Rami,

thank you for these awesome changes! There are just some minor things that i noticed.

Appreciate the help! 🚀

[wgnf]

#22 has been merged now, can you merge the origin/main-branch into your forked branch?

[icnocop]

I have synchronized the branches and resolved the code review comments.

Thank you.

[wgnf]

Thanks for the changes, they look good! 👍🏼
Just as a general tip: Resolving comments should be done by the reviewer (me in this case), because that person is the one deciding if the changes resolve the comment (except for praises).

[wgnf]

Included in version 3.0.0 that has just been released (also see https://github.com/wgnf/SlnParser/releases/tag/v3.0.0). Thanks a lot @icnocop!