Release version 8.0.0 for Xperience by Kentico 31.0.0 (#97)

* Initial plan

* Remove prerelease version suffix and update version matrix for Xperience 31.0.0

Co-authored-by: michalJakubis <64188398+michalJakubis@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: michalJakubis <64188398+michalJakubis@users.noreply.github.com>

Author: Copilot

Directory.Build.props

@@ -6,7 +6,6 @@
     <Copyright>Copyright © $(Company) $([System.DateTime]::Now.Year)</Copyright>
     <Trademark>$(Company)™</Trademark>
     <VersionPrefix>8.0.0</VersionPrefix>
-    <VersionSuffix>prerelease-1</VersionSuffix>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
 
     <PackageProjectUrl>https://github.com/Kentico/xperience-by-kentico-azure-ai-search</PackageProjectUrl>

README.md

@@ -12,6 +12,7 @@ This integration enables you to create [AzureSearch](https://azure.microsoft.com
 
 | Xperience Version | Library Version |
 | ----------------- | --------------- |
+| >= 31.0.0         | >= 8.0.0        |
 | >= 30.6.0         | >= 5.3.0        |
 | >= 30.5.1         | >= 5.2.0        |
 | >= 30.0.0         | >= 5.0.0        |