`--fix=false` behavior could be improved

[rubberduck203]

Currently, when the --fix=false flag is passed, it will stop at the first failing check.
Ideally, when --fix=false is passed, it would run all the checks, regardless of status so the user can see all of the problems/which fixes would be run.

Consider the following doctor group.

apiVersion: scope.github.com/v1alpha
kind: ScopeDoctorGroup
metadata:
  name: fix-false
spec:
  include: when-required
  actions:
    - name: succeeds
      check:
        commands:
          - echo "succeeds"
      fix:
        commands:
          - echo "fix ran"
    - name: run-always-not-required
      required: false
      check: {}
      fix:
        commands:
          - echo "this always runs but isn't critical"
    - name: run-always-required
      check: {}
      fix:
        commands:
          - echo "this always runs but *is* critical"
    - name: another-action
      check:
        commands:
          - echo "another action"
      fix:
        commands:
          - echo "this is another action"

Currently this is the output

❯ scope doctor run --fix=false --working-dir examples --progress=plain --only fix-false
 INFO Check was successful, group: "fix-false", name: "succeeds"
 INFO Check failed, fix was not run, group: "fix-false", name: "run-always-not-required"
 INFO Check failed, fix was not run, group: "fix-false", name: "run-always-required"
Summary: 0 groups succeeded, 1 groups failed

As you can see, some of this can be worked around by marking fixes that should always run (because they don't have a check) with required: false but that may or may not be appropriate depending on the action.

Ideally, we would get the following output.

❯ scope doctor run --fix=false --working-dir examples --progress=plain --only fix-false
 INFO Check was successful, group: "fix-false", name: "succeeds"
 WARN Check failed, fix was not run, group: "fix-false", name: "run-always-not-required"
 WARN Check failed, fix was not run, group: "fix-false", name: "run-always-required"
 INFO Check was successful, group: "fix-false", name: "another-action"
Summary: 0 groups succeeded, 1 groups failed

Not the use of WARN to bring the user's attention to the failing checks and that all of the checks were run and reported.