Add & register more basic commands

src/vm/commands/clear.ts

@@ -0,0 +1,16 @@
+import {Command, ParseContext} from "./command.js";
+import {LexInput} from "../lexer.js";
+
+export class Clear extends Command<{}> {
+    isParseCandidate(token: LexInput): boolean {
+        return this.isKeyword(token, 'clear')
+    }
+
+    attemptParse(context: ParseContext): {} {
+        return {}
+    }
+
+    getDisplayName(): string {
+        return 'clear'
+    }
+}