chore(docs): clean up debugging_names.md and self_hosting.md for clarity and conciseness

feat(docs): enhance self_hosting.md with additional instructions for quick setup and deployment
fix(nginx.py): add missing directory creation for nginx certificates in ssh_lib
refactor(nginx.py): update curl command filtering logic based on skip_planet configuration in http_host_lib

ssh_lib/nginx.py

@@ -37,6 +37,7 @@ def nginx(c):
 
     c.sudo('mkdir -p /data/nginx/sites')
     c.sudo('mkdir -p /data/nginx/acme-challenges')
+    c.sudo('mkdir -p /data/nginx/certs')
 
     if not exists(c, '/etc/nginx/ssl/dummy.crt'):
         c.sudo('mkdir -p /etc/nginx/ssl')