Move ~/runner code to ~/ci/runner

What does this MR do and why?

Move ~/runner code to ~/ci/runner

This change moves the runner directories to use the /ci prefix so we can assign CODEOWNERS to the /ci directory.

• Implements: #377522 (closed),
• See epic: &8943 for more details.

Commands and replacements used

# Pre-replacement commands:

mkdir app/assets/javascripts/ci/
mv app/assets/javascripts/runner/ app/assets/javascripts/ci/
mkdir spec/frontend/ci/
mv spec/frontend/runner/ spec/frontend/ci/
mkdir ee/app/assets/javascripts/ci/
mv ee/app/assets/javascripts/runner/ ee/app/assets/javascripts/ci/
mkdir ee/spec/frontend/ci/
mv ee/spec/frontend/runner/ ee/spec/frontend/ci/
rm -rf graphql/ci/runner/
rm -rf tmp/tests/frontend/fixtures-ee/graphql/runner/

# Replacement patterns:

~/runner -> ~/ci/runner
ee/runner -> ee/ci/runner
ee_else_ce/runner -> ee_else_ce/ci/runner
ee_component/runner/ -> ee_component/ci/runner/
/app/assets/javascripts/runner -> /app/assets/javascripts/ci/runner
query_path = 'runner/graphql/' -> query_path = 'ci/runner/graphql/'
fixtures_path = 'graphql/runner/' -> fixtures_path = 'graphql/ci/runner/'
test_fixtures/graphql/runner -> test_fixtures/graphql/ci/runner
jest/runner -> jest/ci/runner

# After-replacement commands: 

bundle exec rspec -f d ee/spec/frontend/fixtures/runner.rb spec/frontend/fixtures/runner.rb
yarn jest --watch

# Rollback:

git reset --hard origin/master
rm -rf app/assets/javascripts/ci/
rm -rf spec/frontend/ci/

Screenshots or screen recordings

NA

How to set up and validate locally

I expanded the pipeline to run extensive tests: pipeline:run-all-jest pipeline:run-as-if-foss pipeline:run-all-rspec

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.