hg.sr.ht: add -nginx subpackage
hg.sr.ht: overhaul init files
Deploy hg.sr.ht's partial config files
hg.sr.ht: set arch to all
hg.sr.ht: build hgsrht-keys Go program
Add mercurial evolve package, make it a dependency of hgsrht
hg.sr.ht: normalize init scripts
Add hg.sr.ht-webhooks service
Add hg.sr.ht package