Add 'asSequence' operation support

idea/testData/debugger/sequence/exec/sequence/outs/asSequence.out

@@ -0,0 +1,32 @@
+LineBreakpoint created at AsSequence.kt:5
+Run Java
+Connected to the target VM
+AsSequence.kt:5
+sequenceOf(1, 2, 3)
+.asSequence()
+.count()
+asSequence
+    before: 1,3,5
+    after: 2,4,6
+count
+    before: 2,4,6
+    after: nothing
+mappings for asSequence
+  direct:
+    1 -> 2
+    3 -> 4
+    5 -> 6
+  reverse:
+    1 <- 2
+    3 <- 4
+    5 <- 6
+mappings for count
+  direct:
+    2 -> nothing
+    4 -> nothing
+    6 -> nothing
+  reverse:
+    empty
+Disconnected from the target VM
+
+Process finished with exit code 0

idea/testData/debugger/sequence/exec/sequence/src/misc/AsSequence.kt

@@ -0,0 +1,6 @@
+package misc
+
+fun main(args: Array<String>) {
+  // Breakpoint!
+  sequenceOf(1, 2, 3).asSequence().count()
+}