feat: add OAuth2 applications (#11197)

* Add database tables for OAuth2 applications

These are applications that will be able to use OAuth2 to get an API key
from Coder.

* Add endpoints for managing OAuth2 applications

These let you add, update, and remove OAuth2 applications.

* Add frontend for managing OAuth2 applications

coderd/database/queries/oauth2.sql

@@ -0,0 +1,62 @@
+-- name: GetOAuth2ProviderApps :many
+SELECT * FROM oauth2_provider_apps ORDER BY (name, id) ASC;
+
+-- name: GetOAuth2ProviderAppByID :one
+SELECT * FROM oauth2_provider_apps WHERE id = $1;
+
+-- name: InsertOAuth2ProviderApp :one
+INSERT INTO oauth2_provider_apps (
+    id,
+    created_at,
+    updated_at,
+    name,
+    icon,
+    callback_url
+) VALUES(
+    $1,
+    $2,
+    $3,
+    $4,
+    $5,
+    $6
+) RETURNING *;
+
+-- name: UpdateOAuth2ProviderAppByID :one
+UPDATE oauth2_provider_apps SET
+    updated_at = $2,
+    name = $3,
+    icon = $4,
+    callback_url = $5
+WHERE id = $1 RETURNING *;
+
+-- name: DeleteOAuth2ProviderAppByID :exec
+DELETE FROM oauth2_provider_apps WHERE id = $1;
+
+-- name: GetOAuth2ProviderAppSecretByID :one
+SELECT * FROM oauth2_provider_app_secrets WHERE id = $1;
+
+-- name: GetOAuth2ProviderAppSecretsByAppID :many
+SELECT * FROM oauth2_provider_app_secrets WHERE app_id = $1 ORDER BY (created_at, id) ASC;
+
+-- name: InsertOAuth2ProviderAppSecret :one
+INSERT INTO oauth2_provider_app_secrets (
+    id,
+    created_at,
+    hashed_secret,
+    display_secret,
+    app_id
+) VALUES(
+    $1,
+    $2,
+    $3,
+    $4,
+    $5
+) RETURNING *;
+
+-- name: UpdateOAuth2ProviderAppSecretByID :one
+UPDATE oauth2_provider_app_secrets SET
+    last_used_at = $2
+WHERE id = $1 RETURNING *;
+
+-- name: DeleteOAuth2ProviderAppSecretByID :exec
+DELETE FROM oauth2_provider_app_secrets WHERE id = $1;