Allow conditional masking application in table resource

[cooley-hi]

Is your feature request related to a problem? Please describe.

v0.64.0 added the ability to add conditional masking policies. Unfortunately there doesn't appear to be a way to apply those masking policies. The masking_policy variable in the column block of a table doesn't allow you to add a using() clause, which is needed to apply a conditional mask.

Describe the solution you'd like

It probably makes the most sense to use the snowflake_table_column_masking_policy_application resource, replacing the column string with a signature block that matches the masking policy schema.

Describe alternatives you've considered

rewrite the masking_policy variable in the column block of the table resource.

Additional context