Description

I made the masking tag, and support the partial masking function.

The built-in tag masking is added using the following syntax:

{% masking <column-name> <masking-function> %}

For an example of SQL

SELECT
  {% masking id partial(2, 'xxxxxxx', 0) %} as id,
  name
FROM user;

SELECT
  {% masking id partial(2, 'xxxxxxx', 2) %} as id,
  name
FROM user;

Issue ticket number

closes #139

test (yarn run jest masking)

Additional Context

• Implementing the partial function is based on considering the currently supported connectors and using a generic function to implement it.
• Per discussion with Ivan before, maybe... in order to cope with different connectors, it may be possible in the future that implement a masking function for each connector