✨ Convert build scripts to Kotlin

Also added some new tasks to only build/install to maven local certain platforms
`buildMinecraft`, `installMinecraft`, `buildDiscord`, `installDiscord`, `buildIRC`, `installIRC`

examples/example-jda/build.gradle.kts

@@ -0,0 +1,24 @@
+plugins {
+    application
+    id("com.github.johnrengelman.shadow")
+}
+
+application {
+    mainClass.set("cloud.commandframework.examples.jda.ExampleBot")
+}
+
+repositories {
+    jcenter()
+}
+
+dependencies {
+    implementation(project(":cloud-jda"))
+    implementation("net.dv8tion:JDA:4.2.0_212")
+    implementation("org.slf4j:slf4j-simple:1.7.30")
+}
+
+tasks {
+    build {
+        dependsOn(shadowJar)
+    }
+}