Creates UI for signIn page integrating with OAuth

[maxicapodacqua]

Closes #11

Things to fix in future iterations:

1. Layout spaces (some padding might not match design)
2. Mobile is not including the image at the bottom
3. Privacy and Terms links are not going to any page and their location is incorrect, should be at the bottom of the page

Features:

• When user is not logged in, the app will redirect them to the signin/ page
• After login they will be redirected to the dashboard (or any callbackURL they had)
• Login Dialog allows for email/password login
• OAuth buttons allows for login with Google/Facebook/Apple login
• Error messages are shown as MUI Alert components
• Refactored BrandIcon into a SVG component so we can control it MUI SvgIcon better

[tomivm]

Good Job @maxicapodacqua I noticed that the web console is showing these errors. Warning: Failed prop type: Invalid propchildrensupplied toForwardRef(Box), expected a ReactNode. Warning: Extra attributes from the server: data-new-gr-c-s-check-loaded,data-gr-ext-installed

[maxicapodacqua]

Warning: Extra attributes from the server: data-new-gr-c-s-check-loaded,data-gr-ext-installed

That warning it's because of the Gramarly extension (I have the same warning and extension installed) .

I'll work on the ForwardRef warning now