test for loop
fixed for loop test
implemented ForStatementCounter and UpdateExpressionCounter
implemented ForStatement and UpdateExpression check
test for in loop
implemented for in loop check and ForInLoopCounter
modified for loop test description
modified for loop description
test for loop with member expression
added switch and for counters
test switch with 2 cases
implement switchStatement, switchCase, breakStatement check and counters
added test for switch statement with one case