📃 Introduce buildSrc for convenience

So that we don't have to set it up when
we need it.

buildSrc/.gitignore

@@ -0,0 +1,42 @@
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

buildSrc/build.gradle.kts

@@ -0,0 +1,24 @@
+plugins {
+    id("java")
+    alias(libs.plugins.kotlin)
+}
+
+group = "org.lunakoly"
+version = "1.0.7"
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation(platform("org.junit:junit-bom:5.9.1"))
+    testImplementation("org.junit.jupiter:junit-jupiter")
+}
+
+tasks.test {
+    useJUnitPlatform()
+}
+
+kotlin {
+    jvmToolchain(11)
+}

buildSrc/settings.gradle.kts

@@ -0,0 +1,9 @@
+// Source:
+// https://docs.gradle.org/current/userguide/platforms.html#sec:importing-catalog-from-file
+dependencyResolutionManagement {
+    versionCatalogs {
+        create("libs") {
+            from(files("../gradle/libs.versions.toml"))
+        }
+    }
+}

buildSrc/src/main/kotlin/org/lunakoly/quicklink/helpers/Helpers.kt

@@ -0,0 +1,8 @@
+@file:Suppress("unused")
+
+package org.lunakoly.quicklink.helpers
+
+fun <T> pickFirstMiddleAndLast(elements: List<T>) = when {
+    elements.isEmpty() -> emptySet()
+    else -> setOf(elements.first(), elements.get(elements.lastIndex / 2), elements.last())
+}