Fix ESLint errors, bugs, and add gravity export

- Fix missing return in childRegistrationUtils.registerChild()
- Fix assertionUtils: assertNoNaN uses this.assertNoNaN
- Fix logger: nameModule uses this.nameModule
- Fix assetUtils: convert ESM to CommonJS
- Fix childRegistrationUtils_DEPRECATED: desc -> softwareType
- Add gravity export to index.js for rotatingMachine
- Fix ESLint errors across 18 files (no-undef, no-case-declarations,
  no-mixed-spaces-and-tabs, parsing errors)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/state/movementManager.js

@@ -49,15 +49,17 @@ class movementManager {
     try {
       // Execute the movement logic based on the mode
       switch (this.movementMode) {
-        case "staticspeed":
+        case "staticspeed": {
           const movelinFeedback = await this.moveLinear(targetPosition,signal);
           this.logger.info(`Linear move: ${movelinFeedback} `);
           break;
+        }
 
-        case "dynspeed":
+        case "dynspeed": {
           const moveDynFeedback = await this.moveEaseInOut(targetPosition,signal);
           this.logger.info(`Dynamic move : ${moveDynFeedback}`);
           break;
+        }
 
         default:
           throw new Error(`Unsupported movement mode: ${this.movementMode}`);