Build: Build android-dx and intellij-sdk repo to dependencies/repo

From KOTLIN-CR-2801 reasons to move:
 - I've changed repo layout and build process in incompatible way and decided to change location
 - It was difficult to find and annoying to locate, it was very deep and long path
 - I think dependencies/repo path is very easy to remember and find
 - It was called dependencies some time ago

libraries/examples/kotlin-gradle-subplugin-example/build.gradle

@@ -22,7 +22,7 @@ dependencies {
     
     compileOnly gradleApi()
 
-    compileOnly("kotlin.build.custom.deps:intellij-core:${rootProject.ext["versions.intellijSdk"]}") {
+    compileOnly("kotlin.build:intellij-core:${rootProject.ext["versions.intellijSdk"]}") {
         artifact {
             name = 'intellij-core'
             type = 'jar'