Support building isle with modern MSVC + msys2 (#421)

* cmake: detect older MSVC and define ENABLE_DECOMP_ASSERTS to enable decomp asserts

* Add /Zc:__cplusplus to define __cplusplus with c++ version number

* Silence deprecated CRT releated warnings

* LegoCameraController overrids some methods that are not defined in its parent(s)

* Tgl::Device::GetDrawnTriangleCount does not exist (FIXME: INCORRECT FIX -> Tgl::Device should be updated instead)

* Remove copy/pasted APP_ICON from lego1 resource.h header

* Implement empty ViewLODList::Dump method

* Also enable "compat mode" for newer MSVC compilers

* Only do decomp assertions when using older MSVC compilers

* msys2 mingw compat (cannot pass reference of rvalue)

* Fix msys2 mingw warning: declaration 'class Tgl::Group' does not declare anything

* Add FIXME comment to LEgo3DView::m_previousRenderTime

* LegoView1 is 16 bytes bigger then LegoView ==> 4 32-bit pointers

* include string.h for strlen

* Fix overrides

* Fix constness of method

* Fixes

* Formatting

* Add size assert for MxFrequencyMeter

* ci: build isle with msys2 + msvc on GitHub actions

* Set vcvars for msvc

* msys2 needs the msys2 shell

* Build in default shell

* isle is not 64-bit yet (I think)

* Print bitness

* Use amd64_x64 cross tools

* Minor updates

* Add more names

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Co-authored-by: Christian Semmler <mail@csemmler.com>

LEGO1/lego/legoomni/src/video/legovideomanager.cpp

@@ -10,6 +10,7 @@
 
 DECOMP_SIZE_ASSERT(LegoVideoManager, 0x590);
 DECOMP_SIZE_ASSERT(MxStopWatch, 0x18);
+DECOMP_SIZE_ASSERT(MxFrequencyMeter, 0x20);
 
 // FUNCTION: LEGO1 0x1007aa20
 LegoVideoManager::LegoVideoManager()