makerst: Improve error reporting
makerst: Improve error reporting

- List file names before error descriptions, as is common in linters.
- Print the number of errors reported at the end of the list.
- Use double quotes instead of single quotes in messages.

firefly2442/godot,guilhermefelipecgs/godot,ZuBsPaCe/godot,Valentactive/godot,BastiaanOlij/godot,Zylann/godot,Zylann/godot,Valentactive/godot,vkbsb/godot,Shockblast/godot,josempans/godot,akien-mga/godot,guilhermefelipecgs/godot,sanikoyes/godot,firefly2442/godot,pkowal1982/godot,Shockblast/godot,sanikoyes/godot,vkbsb/godot,sanikoyes/godot,Valentactive/godot,Zylann/godot,ZuBsPaCe/godot,sanikoyes/godot,Valentactive/godot,akien-mga/godot,guilhermefelipecgs/godot,BastiaanOlij/godot,akien-mga/godot,josempans/godot,firefly2442/godot,vkbsb/godot,sanikoyes/godot,Zylann/godot,vkbsb/godot,godotengine/godot,pkowal1982/godot,guilhermefelipecgs/godot,Shockblast/godot,pkowal1982/godot,BastiaanOlij/godot,josempans/godot,pkowal1982/godot,Valentactive/godot,ZuBsPaCe/godot,firefly2442/godot,akien-mga/godot,guilhermefelipecgs/godot,ZuBsPaCe/godot,godotengine/godot,BastiaanOlij/godot,josempans/godot,Zylann/godot,guilhermefelipecgs/godot,godotengine/godot,Shockblast/godot,Zylann/godot,josempans/godot,pkowal1982/godot,Valentactive/godot,guilhermefelipecgs/godot,vkbsb/godot,ZuBsPaCe/godot,akien-mga/godot,Shockblast/godot,Valentactive/godot,pkowal1982/godot,firefly2442/godot,sanikoyes/godot,josempans/godot,Valentactive/godot,Shockblast/godot,firefly2442/godot,josempans/godot,vkbsb/godot,godotengine/godot,firefly2442/godot,Shockblast/godot,josempans/godot,akien-mga/godot,pkowal1982/godot,BastiaanOlij/godot,BastiaanOlij/godot,Zylann/godot,firefly2442/godot,godotengine/godot,ZuBsPaCe/godot,akien-mga/godot,Zylann/godot,vkbsb/godot,sanikoyes/godot,pkowal1982/godot,akien-mga/godot,godotengine/godot,vkbsb/godot,guilhermefelipecgs/godot,ZuBsPaCe/godot,sanikoyes/godot,Shockblast/godot,BastiaanOlij/godot,ZuBsPaCe/godot,godotengine/godot,godotengine/godot,BastiaanOlij/godot