Debugger: Add breakpoint applicability tests

This commit adds a number of tests that check breakpoint placing behavior, and an inline action that work the same way as tests.

idea/testData/debugger/breakpointApplicability/properties.kt

@@ -0,0 +1,9 @@
+class Foo1 {
+    val x: String /// F, L
+        get() = "foo" /// M
+}
+
+class Foo2 { /// M
+    val x: String = "foo" /// F, L
+        get() = field + "x" /// M
+}