Add structured coroutines and explicit error handling

tools/vscode-gotlin/syntaxes/gotlin.tmLanguage.json

@@ -142,14 +142,6 @@
             "2": { "name": "entity.name.type.interface.gotlin" }
           }
         },
-        {
-          "name": "meta.worker.gotlin",
-          "match": "\\b(worker)\\s+([A-Za-z_][A-Za-z0-9_]*)",
-          "captures": {
-            "1": { "name": "storage.type.worker.gotlin" },
-            "2": { "name": "entity.name.type.worker.gotlin" }
-          }
-        },
         {
           "name": "meta.enum.gotlin",
           "match": "\\b(enum)\\s+([A-Za-z_][A-Za-z0-9_]*)",
@@ -262,7 +254,7 @@
       "patterns": [
         {
           "name": "keyword.control.declaration.gotlin",
-          "match": "\\b(package|import|data|class|interface|worker|enum|fun)\\b"
+          "match": "\\b(package|import|data|class|interface|enum|suspend|fun)\\b"
         },
         {
           "name": "storage.modifier.gotlin",
@@ -282,7 +274,7 @@
         },
         {
           "name": "keyword.control.concurrency.gotlin",
-          "match": "\\b(select|go|defer)\\b"
+          "match": "\\b(select|defer|runBlocking|coroutineScope|launch|async|await|delay|withTimeout|isActive)\\b"
         },
         {
           "name": "keyword.control.exception.gotlin",
@@ -298,7 +290,7 @@
       "patterns": [
         {
           "name": "support.type.builtin.gotlin",
-          "match": "\\b(Int|String|Boolean|Unit|Double|Float|Any|ByteSlice|List|MutableList|Map|MutableMap|Channel|GotlinSQLQuery|GotlinSQLIterator)\\b"
+          "match": "\\b(Int|Long|String|Boolean|Unit|Double|Float|Any|Error|Result|ByteSlice|List|MutableList|Map|MutableMap|Channel|GotlinSQLQuery|GotlinSQLIterator)\\b"
         },
         {
           "name": "support.type.qualified.gotlin",
@@ -324,6 +316,14 @@
     },
     "typeOperators": {
       "patterns": [
+        {
+          "name": "keyword.operator.nullsafe.gotlin",
+          "match": "\\?\\.|!!"
+        },
+        {
+          "name": "keyword.operator.error-propagation.gotlin",
+          "match": "(?<=[a-z0-9_)\\]])\\?(?!\\.)"
+        },
         {
           "name": "keyword.operator.type.nullable.gotlin",
           "match": "(?<=[A-Za-z0-9_>])\\?"