Static .html generator inspired by grohtml.

Bence DOMONKOS cf2ba1cd4b fix: make the macro checking more strict 2 anni fa
html.c 00cc51d21c add code environment macro stub 2 anni fa
html.h 00cc51d21c add code environment macro stub 2 anni fa
makefile 4871e26924 spit into multiple files 2 anni fa
utils.c 815d0403fc add error counter 2 anni fa
utils.h 815d0403fc add error counter 2 anni fa
webgen.c cf2ba1cd4b fix: make the macro checking more strict 2 anni fa