Relocate toml lint task to buildSrc and extend against default task

Fixes build errors after Gradle 9.x upgrade

Ref: https://docs.gradle.org/current/userguide/implementing_custom_tasks.html

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>

app/build.gradle.kts

@@ -12,8 +12,6 @@ plugins {
     checkstyle
 }
 
-apply(from = "check-dependencies.gradle.kts")
-
 val gitWorkingBranch = providers.exec {
     commandLine("git", "rev-parse", "--abbrev-ref", "HEAD")
 }.standardOutput.asText.map { it.trim() }
@@ -172,6 +170,10 @@ tasks.register<JavaExec>("formatKtlint") {
     jvmArgs = listOf("--add-opens", "java.base/java.lang=ALL-UNNAMED")
 }
 
+tasks.register<CheckDependenciesOrder>("checkDependenciesOrder") {
+    tomlFile = layout.projectDirectory.file("../gradle/libs.versions.toml")
+}
+
 afterEvaluate {
     tasks.named("preDebugBuild").configure {
         if (!System.getProperties().containsKey("skipFormatKtlint")) {

buildSrc/build.gradle.kts

@@ -0,0 +1,7 @@
+plugins {
+    `kotlin-dsl`
+}
+
+repositories {
+    gradlePluginPortal()
+}

buildSrc/src/main/kotlin/CheckDependenciesOrder.kt

@@ -4,18 +4,27 @@
  * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-tasks.register("checkDependenciesOrder") {
-    group = "verification"
-    description = "Checks that each section in libs.versions.toml is sorted alphabetically"
+import org.gradle.api.DefaultTask
+import org.gradle.api.file.RegularFileProperty
+import org.gradle.api.tasks.InputFile
+import org.gradle.api.tasks.TaskAction
 
-    val tomlFile = file("../gradle/libs.versions.toml")
+abstract class CheckDependenciesOrder : DefaultTask() {
 
-    doLast {
-        if (!tomlFile.exists()) {
-            throw GradleException("TOML file not found")
-        }
+    @get:InputFile
+    abstract val tomlFile: RegularFileProperty
 
-        val lines = tomlFile.readLines()
+    init {
+        group = "verification"
+        description = "Checks that each section in libs.versions.toml is sorted alphabetically"
+    }
+
+    @TaskAction
+    fun run() {
+        val file = tomlFile.get().asFile
+        if (!file.exists()) error("TOML file not found")
+
+        val lines = file.readLines()
         val nonSortedBlocks = mutableListOf<List<String>>()
         var currentBlock = mutableListOf<String>()
         var prevLine = ""
@@ -50,7 +59,7 @@ tasks.register("checkDependenciesOrder") {
         }
 
         if (nonSortedBlocks.isNotEmpty()) {
-            throw GradleException(
+            error(
                 "The following lines were not sorted:\n" +
                         nonSortedBlocks.joinToString("\n\n") { it.joinToString("\n") }
             )