Sharing implementation of function in code for filtering rows

[GauriSaran]

the code consists of following parts:

1. check the rules that apply to the organization user requested
2. Iterate through each organization rule (create_dataset.py file has main function for that)
3. Iterate through each table in rule to check (loop_through_tables.py)
4. create list of variables of different datatypes in current rule (create_list_of_datatypes_variables.py)
5. Iterate through each ruleValue present (checks if it is of range type or single value) (loop_through_rules.py)
6. Checks the datatype of ruleValue as well to check if it is of datetime or not using regular expression. (filter_by_range_datetime_vars.py and filter_by_range_numeric_vars.py)
7. Iterate through each variable in the list of specific datatype found to check if the ruleValue exists in each of those variables. (filter_by_range_datetime_vars.py and filter_by_range_numeric_vars.py and filter_single_value.py)
8. Filters the rows.
9. Returns the summary of the current data with rows removed. (in the final create_dataset.py file)

[GauriSaran]

Modified code files to format. They are now shared on this branch.