Add custom lint rule project.

app/build.gradle

@@ -255,6 +255,8 @@ android {
 }
 
 dependencies {
+    lintChecks project(':lintchecks')
+
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'androidx.recyclerview:recyclerview:1.0.0'
     implementation 'com.google.android.material:material:1.1.0'

app/lint.xml

@@ -17,6 +17,9 @@
     <issue id="ButtonOrder" severity="error" />
     <issue id="ExtraTranslation" severity="warning" />
 
+    <!-- Custom lints -->
+    <issue id="LogNotSignal" severity="warning" />
+
     <issue id="RestrictedApi" severity="error">
         <ignore path="*/org/thoughtcrime/securesms/mediasend/camerax/VideoCapture.java" />
         <ignore path="*/org/thoughtcrime/securesms/mediasend/camerax/CameraXModule.java" />

app/src/main/java/org/thoughtcrime/securesms/logging/AndroidLogger.java

@@ -1,6 +1,9 @@
 package org.thoughtcrime.securesms.logging;
 
-public class AndroidLogger extends Log.Logger {
+import android.annotation.SuppressLint;
+
+@SuppressLint("LogNotSignal")
+public final class AndroidLogger extends Log.Logger {
 
   @Override
   public void v(String tag, String message, Throwable t) {

app/src/main/java/org/thoughtcrime/securesms/logging/Log.java

@@ -1,8 +1,11 @@
 package org.thoughtcrime.securesms.logging;
 
+import android.annotation.SuppressLint;
+
 import androidx.annotation.MainThread;
 
-public class Log {
+@SuppressLint("LogNotSignal")
+public final class Log {
 
   private static Logger[] loggers;
 

app/src/main/java/org/thoughtcrime/securesms/logging/PersistentLogger.java

@@ -1,5 +1,6 @@
 package org.thoughtcrime.securesms.logging;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import androidx.annotation.AnyThread;
 import androidx.annotation.WorkerThread;
@@ -21,7 +22,8 @@ import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.Executor;
 import java.util.concurrent.Executors;
 
-public class PersistentLogger extends Log.Logger {
+@SuppressLint("LogNotSignal")
+public final class PersistentLogger extends Log.Logger {
 
   private static final String TAG     = PersistentLogger.class.getSimpleName();