Chore: Store android keystore properties in separate file

.gitignore

@@ -30,7 +30,7 @@ ios/Index/DataStore
 build/
 .idea
 .gradle
-local.properties
+*.properties
 *.iml
 *.hprof
 

android/app/build.gradle

@@ -1,6 +1,8 @@
 apply plugin: "com.android.application"
 
 import com.android.build.OutputFile
+import java.util.Properties
+import java.io.FileInputStream
 
 /**
  * The react.gradle file registers a task for each build variant (e.g. bundleDebugJsAndAssets
@@ -125,6 +127,16 @@ def enableHermes = project.ext.react.get("enableHermes", false);
  */
 def nativeArchitectures = project.getProperties().get("reactNativeDebugArchitectures")
 
+// Create a variable called keystorePropertiesFile, and initialize it to your
+// keystore.properties file, in the rootProject folder.
+def keystorePropertiesFile = rootProject.file("keystore.properties")
+
+// Initialize a new Properties() object called keystoreProperties.
+def keystoreProperties = new Properties()
+
+// Load your keystore.properties file into the keystoreProperties object.
+keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+
 android {
     ndkVersion rootProject.ext.ndkVersion
     compileSdkVersion rootProject.ext.compileSdkVersion
@@ -150,6 +162,10 @@ android {
             keyPassword 'android'
         }
         release {
+            storeFile file('drip-release-key.keystore')
+            keyAlias keystoreProperties['keyAlias']
+            keyPassword keystoreProperties['keyPassword']
+            storePassword keystoreProperties['storePassword']
             if (project.hasProperty('DRIP_RELEASE_STORE_FILE')) {
                 storeFile file(DRIP_RELEASE_STORE_FILE)
                 storePassword DRIP_RELEASE_STORE_PASSWORD