feat: add syntax highlighting for Caddyfile

.gitmodules

@@ -281,3 +281,6 @@
 [submodule "assets/syntaxes/02_Extra/Kotlin"]
 	path = assets/syntaxes/02_Extra/Kotlin
 	url = https://github.com/guille/sublime-kotlin
+[submodule "assets/syntaxes/02_Extra/Caddy"]
+	path = assets/syntaxes/02_Extra/Caddy
+	url = https://github.com/caddyserver/sublimetext.git

CHANGELOG.md

@@ -66,6 +66,7 @@
 - Improved Kotlin syntax, see #3699 (@guille)
 - Include subdirectories in SSH Config syntax mapping, see #3758 (@injust)
 - Add Ghostty syntax mapping, see #3759 (@injust)
+- Add syntax highlighting for `Caddyfile` #3789 (@CosmicHorrorDev)
 
 ## Themes
 

tests/syntax-tests/highlighted/Caddyfile/Caddyfile

@@ -0,0 +1,25 @@
+(logging) {
+    log {
+        output file /var/log/caddy.log
+    }
+}
+
+# a comment
+localhost:8080, example.com {
+    root * /var/www/site
+    file_server
+    reverse_proxy /.well-known/matrix/* localhost:8008 {
+        header_up Host {upstream_hostport}
+    }
+    import logging
+}
+
+www.example.com {
+    redir https://example.com{uri} permanent
+    import logging
+}
+
+status.example.com {
+    reverse_proxy localhost:3002
+    import logging
+}

tests/syntax-tests/source/Caddyfile/Caddyfile

@@ -0,0 +1,25 @@
+(logging) {
+    log {
+        output file /var/log/caddy.log
+    }
+}
+
+# a comment
+localhost:8080, example.com {
+    root * /var/www/site
+    file_server
+    reverse_proxy /.well-known/matrix/* localhost:8008 {
+        header_up Host {upstream_hostport}
+    }
+    import logging
+}
+
+www.example.com {
+    redir https://example.com{uri} permanent
+    import logging
+}
+
+status.example.com {
+    reverse_proxy localhost:3002
+    import logging
+}