Update project version to 0.3.0

The version number in the `Directory.Build.props` file has been updated from `0.2.0` to `0.3.0`. This version increment suggests that there are new features, improvements, or other significant changes in the project that justify a new release.

Author: eglauko

src/Directory.Build.props

@@ -9,7 +9,7 @@
 		<ExtSrcGenVer>0.1.10</ExtSrcGenVer>
 	</PropertyGroup>
 	<PropertyGroup>
-		<Ver>0.2.0</Ver>
+		<Ver>0.3.0</Ver>
 		<Prev></Prev>
 	</PropertyGroup>
 </Project>