Add display name recanonicalization methods to the DAO

[MrCreosote]

Follow on from https://github.com/kbase/auth2/pull/386

Next:

• Add CLI arguments to handle recanonicalization
• Update release notes and bump version

Step towards fixing https://github.com/kbase/auth2/issues/351

[codecov[bot]]

Codecov Report

Merging #391 (51e9575) into develop (29fd329) will decrease coverage by 0.02%. The diff coverage is 90.00%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #391 +/- ## ============================================= - Coverage 92.99% 92.97% -0.02% - Complexity 2131 2137 +6 ============================================= Files 124 124 Lines 7413 7449 +36 Branches 1191 1194 +3 ============================================= + Hits 6894 6926 +32 - Misses 476 480 +4 Partials 43 43 ```