[8.0] Standard naming for TokenManager service classes

[atsareg]

This PR is a follow-up of #7888 to make names for the service handlers following the standard convention. The PR propagated to integration replaces #7893. This also means that upon the update the DIRAC installations using already the Tornado TokenManager service will have to update the TokenManager service configuration by adding the HandlerPath option:

HandlerPath = DIRAC/FrameworkSystem/Service/TornadoTokenManagerHandler.py

This will be reflected in the release notes and instructions

BEGINRELEASENOTES

*Framework
CHANGE: Rename TokenManager service classes to follow standard convention for tornado and diset handlers

ENDRELEASENOTES

[fstagni]

Suggested change

	"""TokenManager service is a HTTPs-exposed service responsible for token management, namely storing, updating,
	"""TornadoTokenManager service is a HTTPs-exposed service responsible for token management, namely storing, updating,

[DIRACGridBot]

Sweep summary

Sweep ran in https://github.com/DIRACGrid/DIRAC/actions/runs/11916702132

Failed:

• integration
  cherry-pick 6504d15 into integration failed
  check merge conflicts on a local copy of this repository

  git fetch upstream
  git checkout upstream/integration -b cherry-pick-2-6504d155a-integration
  git cherry-pick -x -m 1 6504d155a
  # Fix the conflicts
  git cherry-pick --continue
  git commit --amend -m 'sweep: #7895 Standard naming for TokenManager service classes' --author='Andrei Tsaregorodtsev <atsareg@in2p3.fr>'
  git push -u origin cherry-pick-2-6504d155a-integration
  
  # If you have the GitHub CLI installed the PR can be made with
  gh pr create \
       --label 'sweep:from rel-v8r0' \
       --base integration \
       --repo DIRACGrid/DIRAC \
       --title '[sweep:integration] Standard naming for TokenManager service classes' \
       --body 'Sweep #7895 `Standard naming for TokenManager service classes` to `integration`.
  
  Adding original author @atsareg as watcher.
  
  BEGINRELEASENOTES
  
  *Framework
  CHANGE: Rename TokenManager service classes to follow standard convention for tornado and diset handlers
  
  ENDRELEASENOTES
  Closes #7897'