Moved example added license and CONTRIBUTING.md

[Ten-James]

This pull request introduces documentation improvements, clarifies contribution guidelines, and corrects the structure and references for the example project. The most significant changes are the addition of contribution instructions, a new license file, and updates to the project and solution files to properly reference the example project.

Documentation and Contribution Guidelines:

• Added a new CONTRIBUTING.md file with clear steps for contributing, coding standards, and license information.
• Updated the Readme.md to reference the new contribution guidelines and moved example usage instructions.
• Added a new LICENSE.md file specifying the project’s license.

Project Structure and References:

• Corrected the path and GUID for the TenJames.CompMap.Example project in the solution file (TenJames.CompMap.sln) to ensure it is properly included and referenced. [1] [2]
• Renamed and updated the path for the TenJames.CompMap.Example.csproj file and fixed the ProjectReference path within the example project to point to the correct location.

Example and Generated Code Documentation:

• Added a code comment in Entitities.cs (now under TenJames.CompMap/TenJames.CompMap.Example/Entitities.cs) to illustrate the structure of generated mapping files, improving clarity for contributors and users.