Add utility method to check if macro is inside table

[GustavoViniciusdeMorais]

Check if macro is inside table

It was added a function to verify if the macro used to clone a table row inside the document is inside a table to avoid the bug 'Can not find the start position of the row to clone.'

It gives to the user of the library a way to avoid the throw of a new exception and continue processing the document without an error caused by a mistake from his client.

Fixes # (improvement)

Checklist:

• I have run composer run-script check --timeout=0 and no errors were reported
• The new code is covered by unit tests (check build/coverage for coverage report)

[troosan]

please fix style issues