#KT-19924: Fix usability issue with extract declaration from file intention

Fix ExtractDeclaration intention name in tests

Fix ExtractDeclaration intention folder and description to avoid "not found Dir URL" exception

idea/testData/quickfix/abstract/makeInlineClassAbstract.kt

@@ -3,7 +3,7 @@
 // ERROR: Primary constructor is required for inline class
 // ACTION: Create test
 // ACTION: Implement members
-// ACTION: Move 'A' to separate file
+// ACTION: Extract 'A' from current file
 // ACTION: Rename file to A.kt
 interface I {
     fun foo(): String

idea/testData/quickfix/abstract/manyImpl.kt

@@ -3,7 +3,7 @@
 // ACTION: Create test
 // ACTION: Make internal
 // ACTION: Make private
-// ACTION: Move 'X' to separate file
+// ACTION: Extract 'X' from current file
 
 interface D {
     fun foo()