Added basic log

app/src/main/java/eu/faircode/email/DaoLog.java

@@ -0,0 +1,36 @@
+package eu.faircode.email;
+
+/*
+    This file is part of FairEmail.
+
+    FairEmail is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    NetGuard is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with NetGuard.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018 by Marcel Bokhorst (M66B)
+*/
+
+import java.util.List;
+
+import androidx.lifecycle.LiveData;
+import androidx.room.Dao;
+import androidx.room.Insert;
+import androidx.room.Query;
+
+@Dao
+public interface DaoLog {
+    @Query("SELECT * FROM log ORDER BY time DESC LIMIT 500")
+    LiveData<List<EntityLog>> liveLogs();
+
+    @Insert
+    long insertLog(EntityLog log);
+}