Make a structure for frontend visualizer

Created visualizer module in compiler. It will contain basic tests for renderer. Additionally added three different modules in visualizer:
1) psi - will contain renderer for old frontend
2) fir - renderer for new frontend
3) common - will contain common code for both renderers

compiler/visualizer/build.gradle.kts

@@ -0,0 +1,27 @@
+plugins {
+    kotlin("jvm")
+}
+
+dependencies {
+    testRuntime(intellijDep())
+    
+    testCompile(project(":compiler:visualizer:render-psi"))
+    testCompile(project(":compiler:visualizer:render-fir"))
+    testCompile(project(":compiler:visualizer:common"))
+    
+    testCompile(commonDep("junit:junit"))
+    testCompile(projectTests(":compiler:tests-common"))
+    testCompile(projectTests(":compiler:fir:resolve"))
+
+}
+
+sourceSets {
+    "main" {}
+    "test" { projectDefault() }
+}
+
+projectTest {
+    workingDir = rootDir
+}
+
+testsJar()

compiler/visualizer/common/build.gradle.kts

@@ -0,0 +1,13 @@
+plugins {
+    kotlin("jvm")
+}
+
+dependencies {
+    compile(project(":compiler:frontend"))
+    compileOnly(intellijCoreDep()) { includeJars("intellij-core") }
+}
+
+sourceSets {
+    "main" { projectDefault() }
+    "test" { }
+}

compiler/visualizer/render-fir/build.gradle.kts

@@ -0,0 +1,15 @@
+plugins {
+    kotlin("jvm")
+}
+
+dependencies {
+    compile(project(":compiler:fir:psi2fir"))
+    compile(project(":compiler:fir:resolve"))
+    compile(project(":compiler:visualizer:common"))
+    compileOnly(intellijCoreDep()) { includeJars("intellij-core") }
+}
+
+sourceSets {
+    "main" { projectDefault() }
+    "test" { }
+}

compiler/visualizer/render-psi/build.gradle.kts

@@ -0,0 +1,13 @@
+plugins {
+    kotlin("jvm")
+}
+
+dependencies {
+    compile(project(":compiler:visualizer:common"))
+    compileOnly(intellijCoreDep()) { includeJars("intellij-core") }
+}
+
+sourceSets {
+    "main" { projectDefault() }
+    "test" { }
+}

settings.gradle

@@ -35,6 +35,10 @@ include ":kotlin-build-common",
         ":compiler:resolution",
         ":compiler:serialization",
         ":compiler:psi",
+        ":compiler:visualizer",
+        ":compiler:visualizer:common",
+        ":compiler:visualizer:render-fir",
+        ":compiler:visualizer:render-psi",
         ":compiler:fir:cones",
         ":compiler:fir:tree",
         ":compiler:fir:tree:visitors-generator",