translator: add test for long

translator/src/test/kotlin/tests/input/long_operations_1.txt

@@ -0,0 +1 @@
+long_operations_1_Multiplication() == 29

translator/src/test/kotlin/tests/kotlin/long_operations_1.kt

@@ -0,0 +1,5 @@
+fun long_operations_1_Multiplication():Int {
+    assert(546344378L * 54321678L == 29678343378826284L)
+    assert(4556656L*67879230 == 309302300654880L)
+    return 29
+}