Convert search queries to GraphQL queries

[rajbos]

Gets all repos that have action.yaml or action.yml file in the root in one go, instead of loading all repositories and looping over them (not sure if we can include files in the query though).

Saves some calls for ratelimiting, which is helpful in a large environment.

[rajbos]

You can only request them in one go with a search query on repositories, which excludes forks :-(

query {
 search(first: 100, type: REPOSITORY, query: "org:rajbos") {
   repositoryCount
    edges {       
      node {
        ... on Repository {  
          nameWithOwner
          object(expression: "main:.action.yml") {
            ... on Tree {
              entries {
                name
              }
            }
          }
        }
      }
    }
  }
} 

Still it is worth converting it and then still go through all the repositories, but only do the manual check on repositories that are actual forks.

The normal repositories and files in it can then be checked through the GraphQL queries (1 for .yml and 1 for yaml).