Allow program with public procedure to have input/output parameters in its procedure division using clause

[smedilol]

Change rule TCRFUN_LIBRARY_PROCEDURE_NO_USING described here: https://github.com/TypeCobolTeam/TypeCobol/wiki/TypeCobolFunctionsSyntax

A program which contains public procedure should be able to have input/output paramters in its procedure division using clause.

Also update page https://github.com/TypeCobolTeam/TypeCobol/wiki/TypeCobolFunctionsSyntax and rule TCRFUN_ONLY_PARAGRAPH_AND_PUBLIC_FUNC_IN_LIBRARY