build: switch to spotless (#355)

* build: switch to spotless

add in some other basic formatting steps that allow for easy
auto-correction

* build: lint text files as well

* chore: remove license headers from package-info files

spotless can't verify these

build-logic/build.gradle.kts

@@ -1,6 +1,6 @@
 plugins {
     `kotlin-dsl`
-    id("org.jlleitschuh.gradle.ktlint")
+    id("com.diffplug.spotless")
 }
 
 repositories {
@@ -15,8 +15,14 @@ dependencies {
     implementation(libs.licenser)
     implementation(libs.gradleKotlinJvm)
     implementation(libs.gradleDokka)
-    implementation(libs.gradleKtlint)
+    implementation(libs.spotless)
 
     // https://github.com/gradle/gradle/issues/15383#issuecomment-779893192
     implementation(files(libs.javaClass.superclass.protectionDomain.codeSource.location))
 }
+
+spotless {
+    kotlin {
+        ktlint()
+    }
+}

build-logic/src/main/kotlin/cloud.base-conventions.gradle.kts

@@ -5,7 +5,7 @@ import org.cadixdev.gradle.licenser.header.HeaderStyle
 plugins {
     id("net.kyori.indra")
     id("net.kyori.indra.checkstyle")
-    id("net.kyori.indra.license-header")
+    id("com.diffplug.spotless")
     id("net.ltgt.errorprone")
 }
 
@@ -40,10 +40,27 @@ tasks {
     }
 }
 
-license {
-    header(rootProject.file("HEADER"))
-    style["java"] = HeaderStyle.DOUBLE_SLASH.format
-    style["kt"] = HeaderStyle.DOUBLE_SLASH.format
+spotless {
+    java {
+        licenseHeaderFile(rootProject.file("HEADER"))
+        importOrderFile(rootProject.file(".spotless/cloud.importorder"))
+        indentWithSpaces(4)
+        trimTrailingWhitespace()
+        endWithNewline()
+    }
+    kotlin {
+        licenseHeaderFile(rootProject.file("HEADER"))
+        indentWithSpaces(4)
+        trimTrailingWhitespace()
+        endWithNewline()
+    }
+    format("configs") {
+        target("**/*.yml", "**/*.yaml", "**/*.json")
+        targetExclude("run/**")
+        indentWithSpaces(2)
+        trimTrailingWhitespace()
+        endWithNewline()
+    }
 }
 
 repositories {

build-logic/src/main/kotlin/cloud.kotlin-conventions.gradle.kts

@@ -5,7 +5,6 @@ plugins {
     id("cloud.base-conventions")
     kotlin("jvm")
     id("org.jetbrains.dokka")
-    id("org.jlleitschuh.gradle.ktlint")
 }
 
 kotlin {
@@ -40,6 +39,12 @@ tasks {
     }
 }
 
+spotless {
+    kotlin {
+        ktlint()
+    }
+}
+
 kotlin {
     explicitApi()
 }