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>

coderd/cmd/root.go

@@ -5,12 +5,13 @@ import (
 	"net/http"
 	"os"
 
+	"github.com/spf13/cobra"
+	"golang.org/x/xerrors"
+
 	"cdr.dev/slog"
 	"cdr.dev/slog/sloggers/sloghuman"
 	"github.com/coder/coder/coderd"
-	"github.com/coder/coder/database"
-	"github.com/spf13/cobra"
-	"golang.org/x/xerrors"
+	"github.com/coder/coder/database/databasefake"
 )
 
 func Root() *cobra.Command {
@@ -22,7 +23,7 @@ func Root() *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			handler := coderd.New(&coderd.Options{
 				Logger:   slog.Make(sloghuman.Sink(os.Stderr)),
-				Database: database.NewInMemory(),
+				Database: databasefake.New(),
 			})
 
 			listener, err := net.Listen("tcp", address)

coderd/cmd/root_test.go

@@ -4,8 +4,9 @@ import (
 	"context"
 	"testing"
 
-	"github.com/coder/coder/coderd/cmd"
 	"github.com/stretchr/testify/require"
+
+	"github.com/coder/coder/coderd/cmd"
 )
 
 func TestRoot(t *testing.T) {