CMake improvements for Windows build

[claudiofantacci]

This PR is a followup of issue #3597 that tries to address the problem of #3483 and to add CMAKE_DEBUG_POSTFIX when compiling with MS Visual Studio and emulators (those that are recognized by CMake as MSVC generators).

The main difference lies in third-party/libtm/resources/CMakeLists.txt where multiple file(APPEND ...) commands are replaced with a single file(WRITE ...) command. This is to resolve a problem where sometimes the files where malformed.
⚠️ Note that strange indentation of the file(WRITE ...) commands is necessary to have a proper indentation in the generated files. If you don't like it (I personally don't 😄) I reformat the string into a single line by adding \ns, but I think the result is even uglier than the former and much less readable 🙃.

I also added two new entries in the .gitignore file:

1. exclude all folders that starts with build, for example I may have a folder build for Release and a buildd folder for Debug.
2. exclude the doxygen-generated documentation files.

Note that in order to close #3597 we also need #3507 to be merged.

Fixes #3483.

[dorodnic]

Thanks @claudiofantacci
I tested this PR merged together with #3647 and everything seem to work.
Really like the d suffix, as it will save a rebuild when switching between Debug and Release modes.
We might have to push it to the next release, since the suffix will require changes to Windows SDK Installer on our part, but otherwise looks good to me 👍

[claudiofantacci]

Thanks for your feedback @dorodnic, really appreciated 🎉

Really like the d suffix, as it will save a rebuild when switching between Debug and Release modes.
We might have to push it to the next release since the suffix will require changes to Windows SDK Installer on our part, but otherwise looks good to me 👍

This. Is. Awesome!
Thanks again and looking forward to see this PR merged 👍
Let me know if you need any changes!

[ev-mp]

@claudiofantacci , the mentioned merge resulted in a merge conflicts with this PR.
Can you update/rebase it to accommodate for the changes ? Thanks

[claudiofantacci]

@ev-mp sure I will! I’m out of office now, I’ll do everything tomorrow 🙂

[radfordi]

This needs rebasing, @claudiofantacci, now that #3647 has been merged.

[claudiofantacci]

I just rebased on top of development branch.
By my understanding, the write(FILE) CMake command of the libtm CMake code has been deleted. As a consequence, I removed the commit that was modifying that part of the code.
If you want, I will edit the first post to adjust the content to the two remaining commits.

[radfordi]

Thanks @claudiofantacci. Yes, the write(FILE) is gone now. 7a63691 looks like it's a fix to only use MSVC options when actually compiling with MSVC (and not say with clang) combined with the addition of the d. Is that correct?

[claudiofantacci]

@radfordi exactly! Only those two points 🙂

[dorodnic]

@claudiofantacci thank you for contributing!
Your feedback, help with review, and keeping patches up to date are all very much appreciated.