Create plugin for linting (#8942)

buildSrc/build.gradle.kts

@@ -3,12 +3,14 @@ plugins {
 }
 
 dependencies {
-    compileOnly("org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinLibs.versions.kotlin.version.get()}")
-
+    implementation(androidxLibs.gradle)
+    implementation(kotlinLibs.gradle)
+    implementation(libs.kotlinter)
     implementation(gradleApi())
 }
 
 repositories {
+    gradlePluginPortal()
     mavenCentral()
     google()
 }

buildSrc/settings.gradle.kts

@@ -1,5 +1,11 @@
 dependencyResolutionManagement {
     versionCatalogs {
+        create("libs") {
+            from(files("../gradle/libs.versions.toml"))
+        }
+        create("androidxLibs") {
+            from(files("../gradle/androidx.versions.toml"))
+        }
         create("kotlinLibs") {
             from(files("../gradle/kotlinx.versions.toml"))
         }

buildSrc/src/main/kotlin/tachiyomi.lint.gradle.kts

@@ -0,0 +1,20 @@
+import org.jmailen.gradle.kotlinter.KotlinterExtension
+import org.jmailen.gradle.kotlinter.KotlinterPlugin
+
+apply<KotlinterPlugin>()
+
+extensions.configure<KotlinterExtension>("kotlinter") {
+    experimentalRules = true
+
+    disabledRules = arrayOf(
+        "experimental:argument-list-wrapping", // Doesn't play well with Android Studio
+        "filename", // Often broken to give a more general name
+    )
+}
+
+tasks {
+    named<DefaultTask>("preBuild").configure {
+        if (!System.getenv("CI").toBoolean())
+            dependsOn("formatKotlin")
+    }
+}