feat: notifications (#109)

* implement notification providers

* email provider

* notification handler

* notify users

* implement code sent on user eventstore

* send email implementation

* send init code

* handle codes

* fix project member handler

* add some logs for debug

* send emails

* text changes

* send sms

* notification process

* send password code

* format phone number

* test format phone

* remove fmts

* remove unused code

* rename files

* add mocks

* merge master

* Update internal/notification/providers/email/message.go

Co-authored-by: Silvan <silvan.reusser@gmail.com>

* Update internal/notification/repository/eventsourcing/handler/notification.go

Co-authored-by: Silvan <silvan.reusser@gmail.com>

* Update internal/notification/repository/eventsourcing/handler/notification.go

Co-authored-by: Silvan <silvan.reusser@gmail.com>

* Update internal/notification/providers/email/provider.go

Co-authored-by: Silvan <silvan.reusser@gmail.com>

* requested changes of mr

* move locker to eventstore pkg

* Update internal/notification/providers/chat/message.go

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

* move locker to eventstore pkg

* linebreak

* Update internal/notification/providers/email/provider.go

Co-authored-by: Silvan <silvan.reusser@gmail.com>

* Update internal/notification/repository/eventsourcing/handler/notification.go

Co-authored-by: Silvan <silvan.reusser@gmail.com>

* Update internal/notification/repository/eventsourcing/handler/notification.go

Co-authored-by: Silvan <silvan.reusser@gmail.com>

Co-authored-by: Silvan <silvan.reusser@gmail.com>
Co-authored-by: Livio Amstutz <livio.a@gmail.com>

internal/user/model/notify_user.go

@@ -0,0 +1,53 @@
+package model
+
+import (
+	"github.com/caos/zitadel/internal/model"
+	"time"
+)
+
+type NotifyUser struct {
+	ID                string
+	CreationDate      time.Time
+	ChangeDate        time.Time
+	ResourceOwner     string
+	UserName          string
+	FirstName         string
+	LastName          string
+	NickName          string
+	DisplayName       string
+	PreferredLanguage string
+	Gender            Gender
+	LastEmail         string
+	VerifiedEmail     string
+	LastPhone         string
+	VerifiedPhone     string
+	Sequence          uint64
+}
+
+type NotifyUserSearchRequest struct {
+	Offset        uint64
+	Limit         uint64
+	SortingColumn NotifyUserSearchKey
+	Asc           bool
+	Queries       []*NotifyUserSearchQuery
+}
+
+type NotifyUserSearchKey int32
+
+const (
+	NOTIFYUSERSEARCHKEY_UNSPECIFIED UserSearchKey = iota
+	NOTIFYUSERSEARCHKEY_USER_ID
+)
+
+type NotifyUserSearchQuery struct {
+	Key    NotifyUserSearchKey
+	Method model.SearchMethod
+	Value  string
+}
+
+type NotifyUserSearchResponse struct {
+	Offset      uint64
+	Limit       uint64
+	TotalResult uint64
+	Result      []*UserView
+}