Add gitea service

Needed to modify the nginx configuration to allow streaming of ssh.
Using docker compose for this service, will probably migrate all others soon.

apptabulous/reverseproxy/stream.d/ssh.conf

@@ -0,0 +1,7 @@
+# Stream the ssh connections for gitea
+server {
+  listen 2222;
+  proxy_pass rpi5-2:2222;   # the machine where sshd runs (often same as gitea)
+  proxy_timeout 1h;
+  proxy_connect_timeout 10s;
+}