Remove outdated templates and scripts; introduce new Docker and Nginx management scripts

- Deleted old login and main HTML templates to streamline the user interface.
- Removed test script and verification logic as part of the cleanup.
- Added new `gitea.sh` and `nginx.sh` scripts for managing Docker services and Nginx configurations.
- Created Nginx configuration templates for Gitea and website services to facilitate easier deployment.
- Updated README with instructions for using the new scripts and managing services.

nginx/gitea.https.conf.template

@@ -0,0 +1,22 @@
+server {
+    listen 80;
+    server_name __DOMAIN__;
+    return 301 https://$host$request_uri;
+}
+
+server {
+    listen 443 ssl;
+    server_name __DOMAIN__;
+
+    ssl_certificate __CERT_FILE__;
+    ssl_certificate_key __KEY_FILE__;
+
+    location / {
+        proxy_pass http://127.0.0.1:__PORT__;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_http_version 1.1;
+    }
+}