Re-order brave menus at app menu

[simonhong]

Insert & reorder brave menus based on corresponding commands enable status.
If we want to add/remove from app menu, adjust enable commands status
instead of adjusting it in app menu model directly.
App menu model will add/delete based on commands status.

Fix brave/brave-browser#5552
Normal window app menu

Private window app menu

Tor window app menu

Guest window app menu

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Verified that these changes build without errors on
  • Android
  • iOS
  • Linux
  • macOS
  • Windows
• Verified that these changes pass automated tests (unit, browser, security tests) on
  • iOS
  • Linux
  • macOS
  • Windows
• Verified that all lint errors/warnings are resolved (npm run lint)
• Ran git rebase master (if needed).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.
• Request a security/privacy review as needed.
• Add appropriate QA labels (QA/Yes or QA/No) to include the closed issue in milestone
• Public documentation has been updated as necessary. For instance:
  • https://github.com/brave/brave-browser/wiki/Deviations-from-Chromium-(features-we-disable-or-remove)
  • https://github.com/brave/brave-browser/wiki/Proxy-redirected-URLs
  • https://github.com/brave/brave-browser/wiki/Fingerprinting-Protection-Mode
  • https://github.com/brave/brave-browser/wiki/Brave%E2%80%99s-Use-of-Referral-Codes
  • https://github.com/brave/brave-browser/wiki/Custom-Headers
  • https://github.com/brave/brave-browser/wiki/Web-compatibility-issues-with-tracking-protection
  • https://github.com/brave/brave-browser/wiki/QA-Guide

Test Plan:

Reviewer Checklist:

• New files have MPL-2.0 license header.
• Request a security/privacy review as needed.
• Adequate test coverage exists to prevent regressions
• Verify test plan is specified in PR before merging to source

After-merge Checklist:

• The associated issue milestone is set to the smallest version that the
  changes has landed on.
• All relevant documentation has been updated.

[simonhong]

@rebron I added Ad block as last because corresponding issue doesn't specify it.
Please comments if it needs re-position.

[rebron]

@simonhong Brave Ad Block is good as last on that list. I'll update the issue.

[bsclifton]

Linux got the 03:36:01 /home/ubuntu/jenkins/workspace/rowser-build-pr_reorder_app_menu/src/out/Release/brave_browser_tests: /lib/x86_64-linux-gnu/libm.so.6: version GLIBC_2.29' not found (required by /home/ubuntu/jenkins/workspace/rowser-build-pr_reorder_app_menu/src/out/Release/brave_browser_tests)` error

and Windows had a build error; going to restart CI for those two platforms

[bsclifton]

Tested + changes work great; code changes LGTM (pending CI) 👍

[simonhong]

Hmm, still glibc issue on linux.