feat: allowed toggling login options as admin

[sheensantoscapadngan]

Description 📣

• This PR will allow admins to adjust the allowed login methods from the Admin configuration page
• Filters options in the Personal Settings Page, Organization settings > Security panel, login page, and signup page
• Adds "is enabled" checks to login routes for all methods

Type ✨

• Bug fix
• New feature
• Breaking change
• Documentation

Tests 🛠️

# Here's some code block to paste some code snippets

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• I have read the contributing guide, agreed and acknowledged the code of conduct. 📝

[maidul98]

I'm still seeing SCIM when the only thing i have on is email

[maidul98]

Code looks good, i also played aroud with it and it works well! Just left a small comment

[maidul98]

I'm seeing a blank page when i click the sign up but i'm thinking it shouldn't show at all unless email auth or one of the auth SSO are enabled. What do you think?

Also we'll have to think about for password reset link

[sheensantoscapadngan]

Sign up text is now hidden when none of the ff is enabled: email, github, gitlab, google

[maidul98]

lgtm