Notifications (#34)

Notifications working for:

* Mentions
* Faves
* New follow requests
* New followers

internal/message/notificationsprocess.go

@@ -0,0 +1,24 @@
+package message
+
+import (
+	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+)
+
+func (p *processor) NotificationsGet(authed *oauth.Auth, limit int, maxID string) ([]*apimodel.Notification, ErrorWithCode) {
+	notifs, err := p.db.GetNotificationsForAccount(authed.Account.ID, limit, maxID)
+	if err != nil {
+		return nil, NewErrorInternalError(err)
+	}
+
+	mastoNotifs := []*apimodel.Notification{}
+	for _, n := range notifs {
+		mastoNotif, err := p.tc.NotificationToMasto(n)
+		if err != nil {
+			return nil, NewErrorInternalError(err)
+		}
+		mastoNotifs = append(mastoNotifs, mastoNotif)
+	}
+
+	return mastoNotifs, nil
+}