reorganize and rename driver files for consistency and clarity

src/kiri/mode/cam/work/op-gcode.js

@@ -0,0 +1,13 @@
+/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */
+
+import { CamOp } from '../core/op.js';
+
+export class OpGCode extends CamOp {
+    constructor(state, op) {
+        super(state, op);
+    }
+
+    prepare(ops, progress) {
+        ops.addGCode(this.op.gcode);
+    }
+}