Firebase Authentication

[chayesss]

This used the firebase SDK in conjunction with the angular fire library

Firebase UI authentication was not really the easiest to implement for this angular project, it is a bit easier for other frameworks. Typically there is some kind of wrapper package we could use, but it was out of date since angular somewhat recently moved to angular 18.

This is pretty barebones for now and will need to be updated more for stuff like route guarding or implement other SSO providers such as google/microsoft/github etc.

this can be reviewed but DO NOT MERGE UNTIL #14 is merged

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 82b115f):

https://knowledgequest-dbc73--pr15-firebase-auth-arp6kp5q.web.app

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[Fatima2324]

Looked at the PR