chore: update image sources and version bump to 1.2.0

- Changed image sources for GDPR, CCPA, and HIPAA compliance logos to local paths.
- Updated package version to 1.2.0 in package-lock.json.
- Enhanced README and SIMPLE_MODE documentation with Docker usage instructions.
- Improved table-of-contents worker and related TypeScript definitions for better clarity and functionality.
- Refactored CSS styles for consistency and improved UI elements.

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "bento-pdf",
-  "version": "1.1.1",
+  "version": "1.2.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "bento-pdf",
-      "version": "1.1.1",
+      "version": "1.2.0",
       "license": "Apache-2.0",
       "dependencies": {
         "@fontsource/cedarville-cursive": "^5.2.7",