buildSrc: move plugin dependencies to Dependencies.kt

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

buildSrc/buildSrc/build.gradle.kts

@@ -0,0 +1,21 @@
+plugins {
+  `kotlin-dsl`
+}
+
+repositories {
+  mavenCentral()
+  google()
+  gradlePluginPortal()
+}
+
+kotlinDslPluginOptions {
+  experimentalWarning.set(false)
+}
+
+// force compilation of Dependencies.kt so it can be referenced in buildSrc/build.gradle.kts
+sourceSets.main {
+  java {
+    setSrcDirs(setOf(projectDir.parentFile.resolve("src/main/java")))
+    include("Dependencies.kt")
+  }
+}