Move await keyword to inside of function and test

Author: Cow258

src/harness/fourslash.ts

@@ -4775,6 +4775,7 @@ namespace FourSlashInterface {
             "package",
             "yield",
             "async",
+            "await",
         ].map(keywordEntry);
 
         // TODO: many of these are inappropriate to always provide

src/services/completions.ts

@@ -1957,7 +1957,7 @@ namespace ts.Completions {
     }
 
     function isFunctionLikeBodyKeyword(kind: SyntaxKind) {
-        return kind === SyntaxKind.AsyncKeyword || !isContextualKeyword(kind) && !isClassMemberCompletionKeyword(kind);
+        return kind === SyntaxKind.AsyncKeyword || SyntaxKind.AwaitKeyword || !isContextualKeyword(kind) && !isClassMemberCompletionKeyword(kind);
     }
 
     function keywordForNode(node: Node): SyntaxKind {