build.gradle: Add dependencies

The iP JAR file crashes on Linux

Let's follow nus-cs2103-AY2324S1/forum#173

build.gradle

@@ -14,6 +14,16 @@ repositories {
 dependencies {
     testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter-api', version: '5.10.0'
     testRuntimeOnly group: 'org.junit.jupiter', name: 'junit-jupiter-engine', version: '5.10.0'
+
+    // Used for loops to clean up the imports
+    def platforms = ["win", "linux", "mac"]
+    def javafxDependency = ["javafx-graphics", "javafx-controls", "javafx-fxml"]
+
+    for (plt in platforms) {
+        for (dep in javafxDependency) {
+            runtimeOnly "org.openjfx:$dep:$javafx.version:$plt"
+        }
+    }
 }
 
 test {
@@ -49,6 +59,6 @@ javafx {
     modules = ['javafx.controls', 'javafx.fxml']
 }
 
-run{
+run {
     standardInput = System.in
 }