Extract module 'config' out of 'frontend'

Also move deprecated TargetPlatform there. This allows to get rid of the
dependency cli.common -> frontend, and even on frontend.common.

compiler/cli/cli-common/build.gradle.kts

@@ -5,7 +5,7 @@ plugins {
 
 dependencies {
     compile(project(":core:util.runtime"))
-    compile(project(":compiler:frontend"))
+    compile(project(":compiler:config"))
     compile(project(":compiler:config.jvm"))
     compile(project(":js:js.config"))
     compileOnly(project(":kotlin-reflect-api"))

compiler/config.jvm/build.gradle.kts

@@ -4,7 +4,7 @@ plugins {
 }
 
 dependencies {
-    api(project(":compiler:frontend"))
+    api(project(":compiler:config"))
     api(project(":core:descriptors.jvm"))
     compileOnly(intellijCoreDep()) { includeJars("asm-all", rootProject = rootProject) }
 }

compiler/config/build.gradle.kts

@@ -0,0 +1,15 @@
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
+
+dependencies {
+    api(project(":core:descriptors"))
+    api(project(":compiler:util"))
+    compileOnly(intellijCoreDep()) { includeJars("intellij-core") }
+}
+
+sourceSets {
+    "main" { projectDefault() }
+    "test" {}
+}

compiler/frontend/build.gradle.kts

@@ -1,4 +1,3 @@
-
 plugins {
     kotlin("jvm")
     id("jps-compatible")
@@ -9,6 +8,7 @@ dependencies {
     compile(project(":core:descriptors"))
     compile(project(":core:deserialization"))
     compile(project(":compiler:util"))
+    compile(project(":compiler:config"))
     compile(project(":compiler:container"))
     compile(project(":compiler:resolution"))
     compile(project(":compiler:psi"))