* feat(kubeshell) allow overriding default kubeshell
* Add missing error check and struct tag
* Add migrator for kube shell image and add it as a default in the db
* Fix file name to match migrator pattern
* remove default as it's now coming from the db
* remove blank line
* - conflict resolution code update
- logging migration error on migration failures
* - migrateDBVersionTo34 -> migrateDBVersionToDB34 (naming consistency)
Co-authored-by: zees-dev <dev.786zshan@gmail.com>