ktl-695 chore: support Dokka HTML customization

build.gradle

@@ -188,3 +188,7 @@ subprojects {
 apply from: rootProject.file('gradle/compiler-version.gradle')
 apply from: rootProject.file("gradle/dokka.gradle")
 apply from: rootProject.file("gradle/benchmark-parsing.gradle")
+
+tasks.named("dokkaHtmlMultiModule") {
+    pluginsMapConfiguration.set(["org.jetbrains.dokka.base.DokkaBase": """{ "templatesDir": "${projectDir.toString().replace('\\', '/')}/dokka-templates" }"""])
+}

dokka-templates/README.md

@@ -0,0 +1,4 @@
+# Customize Dokka's HTML. 
+To customize Dokka's HTML output, place a file in this folder.
+Dokka will find a template file there. If the file is not found, a default one will be used.
+This folder is defined by the templatesDir property.

gradle/dokka.gradle

@@ -20,6 +20,8 @@ subprojects {
 
     tasks.named('dokkaHtmlPartial') {
         outputDirectory = file("build/dokka")
+        pluginsMapConfiguration.set(["org.jetbrains.dokka.base.DokkaBase": """{ "templatesDir": "${rootProject.projectDir.toString().replace('\\', '/')}/dokka-templates" }"""])
+
         dokkaSourceSets {
             configureEach {
                 includes.from(rootProject.file('dokka/moduledoc.md').path)