Add `use_asan` option for MSVC to enable AddressSanitizer
Add `use_asan` option for MSVC to enable AddressSanitizer

Exposes AddressSanitizer support in MSVC compiler. Can be installed via individual
components in the Visual Studio 2019 Installer.

Disabled by default. Compile the engine with `scons use_asan=yes`.

Valentactive/godot,godotengine/godot,DmitriySalnikov/godot,sanikoyes/godot,ZuBsPaCe/godot,sanikoyes/godot,godotengine/godot,DmitriySalnikov/godot,vkbsb/godot,vnen/godot,firefly2442/godot,josempans/godot,vnen/godot,DmitriySalnikov/godot,MarianoGnu/godot,vkbsb/godot,sanikoyes/godot,Valentactive/godot,ZuBsPaCe/godot,josempans/godot,honix/godot,honix/godot,Zylann/godot,honix/godot,BastiaanOlij/godot,Valentactive/godot,sanikoyes/godot,vnen/godot,Zylann/godot,BastiaanOlij/godot,ZuBsPaCe/godot,godotengine/godot,BastiaanOlij/godot,ZuBsPaCe/godot,DmitriySalnikov/godot,firefly2442/godot,BastiaanOlij/godot,Shockblast/godot,firefly2442/godot,BastiaanOlij/godot,MarianoGnu/godot,josempans/godot,guilhermefelipecgs/godot,akien-mga/godot,vnen/godot,Faless/godot,pkowal1982/godot,godotengine/godot,Zylann/godot,Zylann/godot,sanikoyes/godot,Zylann/godot,BastiaanOlij/godot,Faless/godot,akien-mga/godot,MarianoGnu/godot,Faless/godot,sanikoyes/godot,Valentactive/godot,vkbsb/godot,akien-mga/godot,godotengine/godot,Zylann/godot,Faless/godot,akien-mga/godot,pkowal1982/godot,josempans/godot,MarianoGnu/godot,ZuBsPaCe/godot,honix/godot,honix/godot,godotengine/godot,vkbsb/godot,DmitriySalnikov/godot,honix/godot,sanikoyes/godot,vnen/godot,guilhermefelipecgs/godot,josempans/godot,Faless/godot,Shockblast/godot,vkbsb/godot,guilhermefelipecgs/godot,DmitriySalnikov/godot,firefly2442/godot,Shockblast/godot,firefly2442/godot,akien-mga/godot,Valentactive/godot,Valentactive/godot,pkowal1982/godot,firefly2442/godot,vnen/godot,guilhermefelipecgs/godot,akien-mga/godot,Faless/godot,josempans/godot,BastiaanOlij/godot,firefly2442/godot,Valentactive/godot,vkbsb/godot,ZuBsPaCe/godot,ZuBsPaCe/godot,godotengine/godot,josempans/godot,josempans/godot,MarianoGnu/godot,BastiaanOlij/godot,Faless/godot,vnen/godot,MarianoGnu/godot,MarianoGnu/godot,vkbsb/godot,godotengine/godot,pkowal1982/godot,vkbsb/godot,guilhermefelipecgs/godot,Faless/godot,DmitriySalnikov/godot,Valentactive/godot,firefly2442/godot,pkowal1982/godot,akien-mga/godot,pkowal1982/godot,akien-mga/godot,Shockblast/godot,ZuBsPaCe/godot,vnen/godot,Zylann/godot,Shockblast/godot,pkowal1982/godot,guilhermefelipecgs/godot,pkowal1982/godot,guilhermefelipecgs/godot,Zylann/godot,Shockblast/godot,Shockblast/godot,sanikoyes/godot,MarianoGnu/godot,guilhermefelipecgs/godot,Shockblast/godot