feature: Add support for pii types and column scanning to deep scan

[codecov[bot]]

Codecov Report

Patch coverage: 66.66% and no project coverage change.

Comparison is base (cf76929) 83.98% compared to head (1c1471a) 83.98%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #222 +/- ## ======================================= Coverage 83.98% 83.98% ======================================= Files 8 8 Lines 487 487 Branches 84 84 ======================================= Hits 409 409 Misses 65 65 Partials 13 13 ``` | [Impacted Files](https://app.codecov.io/gh/tokern/piicatcher/pull/222?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=tokern) | Coverage Δ | | |---|---|---| | [piicatcher/scanner.py](https://app.codecov.io/gh/tokern/piicatcher/pull/222?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=tokern#diff-cGlpY2F0Y2hlci9zY2FubmVyLnB5) | `93.90% <ø> (ø)` | | | [piicatcher/api.py](https://app.codecov.io/gh/tokern/piicatcher/pull/222?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=tokern#diff-cGlpY2F0Y2hlci9hcGkucHk=) | `80.00% <66.66%> (ø)` | |

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[nicolepng]

related to issue #68