doc: update README.md

[erisu]

Platforms affected

n/a

Motivation and Context

Update Readme

Description

• Sort all lists in ascending order
• Move Windows & OSX platform under deprecated
• Move Electron platform under active section
• Remove Experimental Platform section
• Create Other Platform section and move cordova-test-platform to it
• Move whitelist plugin under deprecated
• Added cordova-eslint under other section

Testing

n/a

Checklist

• [ ] I've run the tests to see all new and existing tests pass
• [ ] I added automated test coverage as appropriate for this change
• [ ] Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• [ ] If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• [x] I've updated the documentation if necessary