… and its own solution

- Added a test project to partially test the output of the tool
- Supporting reading a local json file as the schema instead of querying the graphql endpoint
- Supports adding basic auth headers
- Supports adding other custom headers and values
- Added options to save the schema.json file if one wants to view it/whatever
- Added option to export the query this tool use to grab the schema.json file, if one cannot get this tool to run against the graphql server for some reason, then one can manually run it if one have access to its playground/server
- 'private' word is omitted in C#
- Updated readme and readme-nuget

…s folder"

- Updated to an error isnt duplicated in the console window
- Echo off in the cmd

… response of the introspection query