Add Windows ARM64 build

[hmartinez82]

GitHub Actions now has a native Windows on ARM runner. The MSY2 CLANGARM64 environment can be to build ARM64 binaries for windows.

This also introduces a new Inno Setup recipe externally set variable to change the name of the output installer file.
The values for CMAKE_SYSTEM_PROCESSOR are AMD64 and ARM64

[hmartinez82]

@Jarod42 wait, it's not building yet 😅. Failing towards the very end, looking for clang-format, only failing on ARM64, I'm still trying to find out why: https://github.com/hmartinez82/codelite/actions/runs/20391021465/job/58600199488

[Jarod42]

I didn't plan to merge :), just give feed back (ok for me, I also activate CI).
For this kind of change, I would let Eranif merges it anyway.

[hmartinez82]

@Jarod42 Getting there

But I had to manually copy zlib1.dll, libssl-3.dll, libcrypto-3.dll, libwinpthread-1 to the installed bin folder for it to work. These files don't even have the same same across CLANG64 and CLANGARM64 🫤

[hmartinez82]

Ugh, that's because cygcheck doesn't understand ARM64 binaries (it's part of the MSYS environment, not CLANGARM64)

[hmartinez82]

@Jarod42 finally

Can you re-run the checks?