Check other types of includes #6

It looks like you are only checking for tags, but there are other ways to include files in a .csproj too.

BuildAction Property:

• None - The file is not included in the project output group and is not compiled in the build process. An example is a text file that contains documentation, such as a Readme file.
• Compile - The file is compiled into the build output. This setting is used for code files.
• Content - The file is not compiled, but is included in the Content output group. For example, this setting is the default value for an .htm or other kind of Web file.
• Embedded Resource - This file is embedded in the main project build output as a DLL or executable. It is typically used for resource files.

Compile is the biggest one that you are missing since this is what all .cs files use, but I also have None includes in my projects.