[Android] Add and build olm module

Switch to famedly flutter images

Took 4 minutes

android/app/build.gradle

@@ -49,6 +49,11 @@ android {
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        externalNativeBuild {
+            cmake {
+                arguments "-DOLM_TESTS=NO"
+            }
+        }
     }
 
     signingConfigs {
@@ -73,6 +78,15 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+
+    externalNativeBuild {
+        // Encapsulates your CMake build configurations.
+        cmake {
+            // Provides a relative path to your CMake build script.
+            path "../../ios/olm/CMakeLists.txt"
+            version "3.10.2"
+        }
+    }
 }
 
 flutter {