19005 Implemented historical - amalgamation reason text (bcgov#604)

- app version = 7.0.30
- updated some code comments
- added AmalgamatedInto interface object
- added enum mixin and utility functions
- added some business store getters
- refactored getReasonText() and added case for amalgamation
- cast some parameters to pre-empt code errors
- added/updated unit tests

Co-authored-by: Severin Beauvais <severin.beauvais@gov.bc.ca>

package.json

@@ -1,6 +1,6 @@
 {
  "name": "business-filings-ui",
- "version": "7.0.29",
+ "version": "7.0.30",
  "private": true,
  "appName": "Filings UI",
  "sbcName": "SBC Common Components",