Add SQL support

Closes #74

README.md

@@ -37,7 +37,7 @@ Create a `workflow.yml` file in your `.github/workflows` directory like:
         steps:
           - uses: "actions/checkout@master"
           - name: "TODO to Issue"
-            uses: "alstr/todo-to-issue-action@v4.1"
+            uses: "alstr/todo-to-issue-action@v4.1.1"
             id: "todo"
 ```
 
@@ -87,6 +87,7 @@ There are additional inputs if you want to be able to assign issues to projects.
 * Sass
 * Scala
 * Shell
+* SQL
 * Swift
 * TeX
 * TSX

syntax.json

@@ -413,5 +413,21 @@
         }
       }
     ]
+  },
+  {
+    "language": "SQL",
+    "markers": [
+      {
+        "type": "line",
+        "pattern": "--"
+      },
+      {
+        "type": "block",
+        "pattern": {
+          "start": "/\\*",
+          "end": "\\*/"
+        }
+      }
+    ]
   }
 ]