Add new Consistem code snippet (#57)

Author: LeoAnders

CONTRIBUTING.md

@@ -30,6 +30,7 @@ Code snippets are defined in files in the /snippets/ folder:
 
 * objectscript-class.json - snippets for class definition context
 * objectscript.json - snippets for objectscript context 
+* objectscript.json - snippets for consistem objectscript context 
 
 Snippets syntax is described [here](https://code.visualstudio.com/docs/editor/userdefinedsnippets). 
 

package.json

@@ -851,6 +851,10 @@
         "language": "objectscript",
         "path": "./snippets/objectscript.json"
       },
+      {
+        "language": "objectscript",
+        "path": "./snippets/consistem-objectscript.json"
+      },
       {
         "language": "objectscript-int",
         "path": "./snippets/objectscript-int.json"