* refact: Changes required for gorm v2
* refact: Add db.DB wrapper and refact all test fixtures to use it
Stop leaking the gorm abstraction within our unit tests.
* refact: Migrate direct calls to pq to pgx driver
The refactor will remove the remaining direct dependencies on
the pq driver which has been deprecated in favor of the pgx
driver.
It includes the addition of common.SqlOpen which is a wrapper around
sql.Open, which is needed to deal with the driver name changing from
"postgres" to "pgx" but in our code base the dialect and driver are
synonyms.
This swaps the test initialization to use the dbtest package so each
test will get a fresh database created from a template database, instead
of a completely new docker container.
Create Schema Manager and propagate contexts into the DB calls downstream.
Add checks at controller startup and database init for correct schema version and schema migration dirty bit being set.
* Reorganize the db migration .sql scripts into individual schema version directories and generate the sql httpfs fakeFile accordingly.
* Created a /dev schema version directory to hold db schema updates that have not been finalized.
* Add an 'allow-development-migrations' flag to allow `boundary database init` to be executed even when there are schema updates in /dev.
This also then removes support for docker-based containing starting (for
now) from platforms other than windows/darwin/linux as there are build
issues on several.