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>

manifest.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <OfficeApp xmlns="http://schemas.microsoft.com/office/appforoffice/1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:bt="http://schemas.microsoft.com/office/officeappbasictypes/1.0" xmlns:ov="http://schemas.microsoft.com/office/taskpaneappversionoverrides" xsi:type="TaskPaneApp">
   <Id>be5c6f61-4bbf-4bd2-a8da-5031abf096a5</Id>
-  <Version>1.0.0.0</Version>
+  <Version>1.1.0.0</Version>
   <ProviderName>Contoso</ProviderName>
   <DefaultLocale>en-US</DefaultLocale>
   <DisplayName DefaultValue="Edison"/>