Refactor generator of JS source map

- refactor pipeline for generation of source map
- generate "empty" mappings for nodes that impossible
  to map to something reasonable
- generate more accurate locations in source maps for specific
  JS AST nodes
- for binary operation nodes parser now returns location
  of binary operator tokens instead of location of first operand
- change completely how source map remapper works

js/js.translator/testData/lineNumbers/whileWithComplexCondition.kt

@@ -12,4 +12,4 @@ fun box() {
     }
 }
 
-// LINES: 5 2 3 5 8 3 4 9 3 11
+// LINES: 5 2 3 5 8 * 3 4 9 3 11