feat: Add authentication and personal user endpoint (#29)

* feat: Add authentication and personal user endpoint

This contribution adds a lot of scaffolding for the database fake
and testability of coderd.

A new endpoint "/user" is added to return the currently authenticated
user to the requester.

* Use TestMain to catch leak instead

* Add userpassword package

* Add WIP

* Add user auth

* Fix test

* Add comments

* Fix login response

* Fix order

* Fix generated code

* Update httpapi/httpapi.go

Co-authored-by: Bryan <bryan@coder.com>

Co-authored-by: Bryan <bryan@coder.com>

database/query.sql

@@ -1,2 +1,107 @@
--- name: ExampleQuery :exec
-SELECT 'example query';
+-- Database queries are generated using sqlc. See:
+-- https://docs.sqlc.dev/en/latest/tutorials/getting-started-postgresql.html
+--
+-- Run "make gen" to generate models and query functions.
+;
+
+-- name: GetAPIKeyByID :one
+SELECT
+  *
+FROM
+  api_keys
+WHERE
+  id = $1
+LIMIT
+  1;
+
+-- name: GetUserByID :one
+SELECT
+  *
+FROM
+  users
+WHERE
+  id = $1
+LIMIT
+  1;
+
+-- name: GetUserByEmailOrUsername :one
+SELECT
+  *
+FROM
+  users
+WHERE
+  username = $1
+  OR email = $2
+LIMIT
+  1;
+
+-- name: GetUserCount :one
+SELECT
+  COUNT(*)
+FROM
+  users;
+
+-- name: InsertAPIKey :one
+INSERT INTO
+  api_keys (
+    id,
+    hashed_secret,
+    user_id,
+    application,
+    name,
+    last_used,
+    expires_at,
+    created_at,
+    updated_at,
+    login_type,
+    oidc_access_token,
+    oidc_refresh_token,
+    oidc_id_token,
+    oidc_expiry,
+    devurl_token
+  )
+VALUES
+  (
+    $1,
+    $2,
+    $3,
+    $4,
+    $5,
+    $6,
+    $7,
+    $8,
+    $9,
+    $10,
+    $11,
+    $12,
+    $13,
+    $14,
+    $15
+  ) RETURNING *;
+
+-- name: InsertUser :one
+INSERT INTO
+  users (
+    id,
+    email,
+    name,
+    login_type,
+    hashed_password,
+    created_at,
+    updated_at,
+    username
+  )
+VALUES
+  ($1, $2, $3, $4, $5, $6, $7, $8) RETURNING *;
+
+-- name: UpdateAPIKeyByID :exec
+UPDATE
+  api_keys
+SET
+  last_used = $2,
+  expires_at = $3,
+  oidc_access_token = $4,
+  oidc_refresh_token = $5,
+  oidc_expiry = $6
+WHERE
+  id = $1;