Migrate workflow to SyntaxKit structure (#9)

Author: leogdion

.devcontainer/devcontainer.json

@@ -1,6 +1,6 @@
 {
-  "name": "Swift 6.2",
-  "image": "swift:6.2",
+  "name": "Swift 6.3",
+  "image": "swift:6.3",
   "features": {
     "ghcr.io/devcontainers/features/common-utils:2": {
       "installZsh": "false",
@@ -24,7 +24,7 @@
         "lldb.library": "/usr/lib/liblldb.so"
       },
       "extensions": [
-        "sswg.swift-lang"
+        "swift-server.swift"
       ]
     }
   },

.devcontainer/swift-6.1/devcontainer.json

@@ -24,7 +24,7 @@
         "lldb.library": "/usr/lib/liblldb.so"
       },
       "extensions": [
-        "sswg.swift-lang"
+        "swift-server.swift"
       ]
     }
   },

.devcontainer/swift-6.2-nightly/devcontainer.json

@@ -24,7 +24,7 @@
         "lldb.library": "/usr/lib/liblldb.so"
       },
       "extensions": [
-        "sswg.swift-lang"
+        "swift-server.swift"
       ]
     }
   },

.devcontainer/swift-6.2/devcontainer.json

@@ -1,6 +1,6 @@
 {
-  "name": "Swift 6.1 Nightly",
-  "image": "swiftlang/swift:nightly-6.1-noble",
+  "name": "Swift 6.3",
+  "image": "swift:6.3",
   "features": {
     "ghcr.io/devcontainers/features/common-utils:2": {
       "installZsh": "false",
@@ -24,9 +24,9 @@
         "lldb.library": "/usr/lib/liblldb.so"
       },
       "extensions": [
-        "sswg.swift-lang"
+        "swift-server.swift"
       ]
     }
   },
   "remoteUser": "root"
-} 
+}