User Authentication in IDE

[4e6]

Pull Request Description

close #1635

Add authentication and minimum supported version check.

Changelog:

• feat: user authentication
  • User has to sign in before using the app.
  • Available auth methods: Google, GitHub, email with confirmation.
  • After successful authentication user's email is logged in the Mixpanel.
• feat: check the minimum supported app version
  • App compares the current version with the minimum supported version and shows the message if the app version is lower.
  • Minimum supported version is downloaded from GitHub. File config.json on the development branch.
  • Application version is taken from package.json of the client js module (/src/js/lib/package.json)

Important Notes

Checklist

Please include the following checklist in your PR:

• The CHANGELOG.md was updated with the changes introduced in this PR.
• The documentation has been updated if necessary.
• All code conforms to the Rust style guide.
• All code has automatic tests where possible.
• All code has been profiled where possible.
• All code has been manually tested in the IDE.
• All code has been manually tested in the "debug/interface" scene.
• All code has been manually tested by the PR owner against our test scenarios.
• All code has been manually tested by at least one reviewer against our test scenarios.

[wdanilo]

We will be releasing that to a big audience next week. Please triple check that with Marcin (he is sick but if you write to him to double check it, e'd probably do it) if the emails are correctly logged to mixpanel.

[wdanilo]

This is so strange. It's ok, just strange