Make version numbers consistent across all files

- Updated manifest.xml from 1.0.0.0 to 1.1.0.0
- Updated README.md version history with v1.1.0 entry
- Synchronized package-lock.json version with package.json

All application files now consistently refer to version 1.1.0

🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "edison-powerpoint-addin",
-  "version": "0.0.1",
+  "version": "1.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "edison-powerpoint-addin",
-      "version": "0.0.1",
+      "version": "1.1.0",
       "license": "MIT",
       "dependencies": {
         "@fluentui/react-components": "^9.55.1",