Add a new filter for pipeline jobs

What does this MR do and why?

Describe in detail what your merge request does and why.

This MR adds a new filter for jobs in GraphQL queries. With this filter we can query jobs that, for example, have manual execution trigger. This functionality is needed to implement #385732 (closed)

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. You'll need a project that has manual and not-manual deployment jobs. If you don't have one you could clone this project: https://gitlab.com/andrei.zubov/pipelinestest and run a few deployment pipelines. The deploy-staging job will be a manual one
2. navigate to graphql explorer (for example gdk.test:3000/-/graphql-explorer )
3. execute the following graphql query

query getEnvironmentDetails(
  $projectFullPath: ID!
  $environmentName: String
) {
  project(fullPath: $projectFullPath) {
    id
    environment(name: $environmentName) {
      id
      deployments(
        orderBy: { createdAt: DESC }
      ) {
        nodes {
          id
          job {
            id
            deploymentPipeline: pipeline {
              id
              jobs(whenExecuted: ["manual"], retried: false) {
                nodes {
                  id
                  name
                  playable
                  scheduledAt
                  webPath
                }
              }
            }
          }
        }
      }
    }
  }
}

example variables:

"projectFullPath": "gitlab-org/pipelinestest",
"environmentName": "production"

4. you should see a result with manual pipeline jobs

MR acceptance checklist

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