Setup publishing proguard rules for the android library

This would allow us to declare compose related proguard rules for Android
in this module

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>

composeApp/build.gradle.kts

@@ -43,6 +43,13 @@ kotlin {
             enable = true
         }
 
+        optimization {
+            consumerKeepRules.apply {
+                publish = true
+                file("consumer-proguard-rules.pro")
+            }
+        }
+
         withHostTest {
             isIncludeAndroidResources = true
         }

composeApp/consumer-proguard-rules.pro

@@ -0,0 +1,6 @@
+#
+# SPDX-FileCopyrightText: 2026 NewPipe e.V. <https://newpipe-ev.de>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+
+# Proguard rules for Android platform: https://developer.android.com/build/shrink-code