Add repo README, update Gitea README, add Caddy HTTPS proxy

docker/gitea/Caddyfile

@@ -0,0 +1,7 @@
+git.inviscid.dev {
+	reverse_proxy gitea:3000
+}
+
+http://100.49.80.94, http://ec2-100-49-80-94.compute-1.amazonaws.com {
+	reverse_proxy ssw590-group-buttons:3000
+}