fix(bentopdf): serve libreoffice wasm gz with correct nginx headers

Fix Word/Excel conversion hang by serving /libreoffice-wasm assets with
proper MIME types and Content-Encoding.

- serve soffice.wasm.gz as application/wasm + Content-Encoding: gzip
- serve soffice.data.gz as octet-stream + Content-Encoding: gzip
- add immutable caching for wasm/data assets
- always refresh nginx site+service during update to migrate existing installs
- switch install script dependency handling to ensure_dependencies nginx

install/bentopdf-install.sh

@@ -13,7 +13,6 @@ setting_up_container
 network_check
 update_os
 
-
 msg_info "Installing Dependencies"
 $STD apt install nginx -y
 msg_ok "Installed Dependencies"
@@ -48,6 +47,33 @@ server {
 
     gzip_static on;
 
+    location ~* /libreoffice-wasm/soffice\.wasm\.gz$ {
+        gzip off;
+        types {} default_type application/wasm;
+        add_header Content-Encoding gzip;
+        add_header Vary "Accept-Encoding";
+        add_header Cache-Control "public, immutable";
+    }
+
+    location ~* /libreoffice-wasm/soffice\.data\.gz$ {
+        gzip off;
+        types {} default_type application/octet-stream;
+        add_header Content-Encoding gzip;
+        add_header Vary "Accept-Encoding";
+        add_header Cache-Control "public, immutable";
+    }
+
+    location ~* \.wasm$ {
+        types {} default_type application/wasm;
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+
+    location ~* \.(wasm\.gz|data\.gz|data)$ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+
     location / {
         try_files $uri $uri/ $uri.html =404;
     }