fix(webinterface): single variable for kvisionVersion (#216)

Author: eschrewe

webinterface/build.gradle.kts

@@ -8,14 +8,14 @@
 import org.jetbrains.kotlin.gradle.targets.js.webpack.KotlinWebpackConfig
 
 // Versions
-val kvisionVersion = "8.2.0"
+val kotlinVersion: String by System.getProperties()
+val kvisionVersion: String by System.getProperties()
 
 val webDir = file("src/jsMain/web")
 
 plugins {
-    val kotlinVersion = "2.1.10"
-    val kvisionVersion = "8.2.0"
-
+    val kotlinVersion: String by System.getProperties()
+    val kvisionVersion: String by System.getProperties()
     kotlin("plugin.serialization") version kotlinVersion
     kotlin("multiplatform") version kotlinVersion
     id("io.kvision") version kvisionVersion

webinterface/gradle.properties

@@ -5,3 +5,5 @@
 # that can be found in the LICENSE file.
 #
 kotlin.js.compiler=ir
+systemProp.kotlinVersion=2.1.10
+systemProp.kvisionVersion=8.2.0