Extract some classes from descriptors module to :core:common

This is needed to remove dependencies from fir modules to
  `:core:descriptors` module

What was extracted:
- Modality
- ClassKind
- org.jetbrains.kotlin.name package

core/descriptors/build.gradle.kts

@@ -7,6 +7,7 @@ jvmTarget = "1.6"
 javaHome = rootProject.extra["JDK_16"] as String
 
 dependencies {
+    compile(project(":core:descriptors.common"))
     compile(project(":core:util.runtime"))
     compile(project(":core:type-system"))
     compile(kotlinStdlib())