Migrate to Tor Launcher compatible with Firefox ESR60

Upstream ticket: https://trac.torproject.org/projects/tor/ticket/25750

sajolida will do the documentation

Feature Branch: feature/15023-tor-browser-8

Parent Task: #15023 (closed)

Related issues

• Related to #8243
• Related to #15144
• Related to #15709 (closed)
• Blocks #15334 (closed)

Original created by @BitingBird on 14555 (Redmine)