Reverse dependency 'psi' <-> 'frontend.common'

Move ParseUtils to 'psi', and ImportPath to 'frontend.common'.

Now 'psi' depends on 'frontend.common', and that allows to remove
dependency of 'fir:tree:tree-generator' on 'psi', allowing the former to
compile in parallel with the old frontend code.

compiler/fir/tree/tree-generator/build.gradle.kts

@@ -11,7 +11,6 @@ val compileOnly by configurations
 runtimeOnly.extendsFrom(compileOnly)
 
 dependencies {
-    compile(project(":compiler:psi"))
     compile(project(":compiler:frontend.common"))
     compile(project(":core:descriptors"))
     compile(project(":compiler:fir:cones"))