Added Auth.js based authentication

[NuroDev]

What's been changed?

• Added astro-auth integration
  • Created Auth.js config (auth.config.ts) with GitHub provider by default + Drizzle database adapter
  • Added dependencies
    • @auth/core
    • @auth/drizzle-adapter
    • auth-astro
  • Added Auth.js schemas to Drizzle
  • Added types for the new schemas added above
  • Added new migration to add schemas / tables required for authentication
  • Added sign out button to CommentForm component
  • Added new /login page
  • Homepage now redirects to /login if not logged in
• Added basic .example.env with template environment variables
• Added a defaultName prop to CommentForm component
• Added custom environment variable types to env.d.ts

[NuroDev]

I've just realised that the README.md may also need updating in relation to the environment variables.

Shall we add the REPLICA_URL, LITESTREAM_ACCESS_KEY_ID & LITESTREAM_SECRET_ACCESS_KEY environment variables to the .example.env? And/or update the README.md to tell people how to use the .example.env instead?

[julianfbeck]

Hey, Thanks for your pr! I wanted to use auth with lazy stack and found your open PR :)

i just testet it and needed to adjust a view things to get it working for me :)

[julianfbeck]

Suggested change

	]
	],
	callbacks: {
	session({ session, user }) {
	if (session.user) {
	session.user.id = user.id;
	}
	return session;
	}
	}

This adds the id field to the session.user object. Otherwise you wont retrieve the user id on

[julianfbeck]

Suggested change

	(account) => ({
	compoundKey: primaryKey(account.provider, account.providerAccountId)
	})
	(account) => ({
	compoundKey: primaryKey({
	columns: [account.provider, account.providerAccountId]
	})
	})

[julianfbeck]

Suggested change

	(vt) => ({ compoundKey: primaryKey(vt.identifier, vt.token) })
	(vt) => ({
	compoundKey: primaryKey({ columns: [vt.identifier, vt.token] })
	})```

[julianfbeck]

Suggested change

	"auth-astro": "^4.1.0",
	"auth-astro": "^4.1.1",

[julianfbeck]

Suggested change

	"@auth/drizzle-adapter": "^0.3.12",
	"@auth/drizzle-adapter": "^0.5.0",

I had to update this adapter