feat: Implement automated versioning system with PowerShell build script and centralized version management

- Add version.properties file as single source of truth for VERSION_NAME and VERSION_CODE
- Create build.ps1 script with automated version bumping (Major/Minor/Patch/None) and build orchestration
- Update app/build.gradle.kts to read version from version.properties instead of hardcoded values
- Display dynamic version info in Settings screen using BuildConfig.VERSION_NAME and VERSION_CODE
- Add

app/build.gradle.kts

@@ -8,6 +8,15 @@ plugins {
     alias(libs.plugins.kotlin.serialization)
 }
 
+val versionPropsFile = rootProject.file("version.properties")
+val versionProps = Properties().apply {
+    if (versionPropsFile.exists()) {
+        versionPropsFile.inputStream().use { load(it) }
+    }
+}
+val appVersionCode = (versionProps["VERSION_CODE"] as? String)?.toIntOrNull() ?: 1
+val appVersionName = (versionProps["VERSION_NAME"] as? String) ?: "1.0.0"
+
 android {
     namespace = "com.shaarit"
     compileSdk = 34
@@ -16,8 +25,8 @@ android {
         applicationId = "com.shaarit"
         minSdk = 24
         targetSdk = 34
-        versionCode = 1
-        versionName = "1.0"
+        versionCode = appVersionCode
+        versionName = appVersionName
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {