Remove obfuscation in proguard (#6067)

* Remove obfuscation in proguard for the OSS app. Fully allow it by default for enterprise ones.

* Add logic to use additional customizable proguard files depending on whether the build is an enterprise one or not.

app/build.gradle.kts

@@ -132,8 +132,23 @@ android {
             optimization {
                 enable = true
                 keepRules {
-                    files.add(File(projectDir, "proguard-rules.pro"))
+                    files.add(File(projectDir, "common-proguard-rules.pro"))
                     files.add(getDefaultProguardFile("proguard-android-optimize.txt"))
+
+                    // Depending on whether the app flavor is enterprise or not we want to use different proguard rules.
+                    val flavorProguardFile = if (isEnterpriseBuild) {
+                        // Custom rules for enterprise builds
+                        File(projectDir, "enterprise-proguard-rules.pro")
+                    } else {
+                        // These default rules prevent the OSS app from being obfuscated
+                        File(projectDir, "default-proguard-rules.pro")
+                    }
+
+                    if (flavorProguardFile.exists()) {
+                        files.add(flavorProguardFile)
+                    } else {
+                        logger.warn("Proguard file ${flavorProguardFile.absolutePath} does not exist")
+                    }
                 }
             }
         }