Added a Passwort Strength Component for User Registration

[Csaern]

As a project I made a password strength component to visualize the strength of a password used to create an account for the galaxy server. The user gets feedback for his input at the registration site. I also added a button for password guidelines, to show users, what components they need to get a strong password.

How to test the changes?

(Select all options that apply)

• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. [add testing steps and prerequisites here if you didn't write automated tests covering all your changes]

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.

[nsoranzo]

Thanks for working on this feature! Two suggestions:

• Add the "eye" functionality to the password field to allow the uses to view what they are typing if it's safe to do so
• Replace the Password Guidelines button with a simple help text containing the few rules we actually enforce and a link to general-purpose guidelines like https://www.cisa.gov/secure-our-world/use-strong-passwords

[guerler]

I agree with @nsoranzo, and would additionally suggest that you could add a checkmark to each fulfilled criteria listed in the help section. Thank you for working on this!