moving all the strings to a dedicated libray/strings module

changelog.d/3955.misc

@@ -0,0 +1 @@
+Creates a dedicated strings module

library/ui-strings/build.gradle

@@ -0,0 +1,22 @@
+plugins {
+    id 'com.android.library'
+    id 'kotlin-android'
+    id 'com.likethesalad.stem-library'
+}
+
+android {
+    compileSdk versions.compileSdk
+    defaultConfig {
+        minSdk versions.minSdk
+        targetSdk versions.targetSdk
+    }
+
+    compileOptions {
+        sourceCompatibility versions.sourceCompat
+        targetCompatibility versions.targetCompat
+    }
+
+    kotlinOptions {
+        jvmTarget = "11"
+    }
+}

library/ui-strings/src/main/AndroidManifest.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest package="im.vector.lib.strings" />