Update trackerDB schema migration

[algorandskiy]

Probably not useful for this PR, but maybe in the future it would be.

There are some utilities added with the participation registry to fill in the boilerplate for these sorts of migrations. You pass an array of Migration functions and it handles the versioning and calling the correct subset of migration handlers.

https://github.com/algorand/go-algorand/blob/master/util/db/initialize.go#L34

At one point I converted the accountDB to use the new utilities, it was mostly straightforward: https://github.com/winder/go-algorand/pull/3/files#

Originally posted by @winder in https://github.com/algorand/go-algorand/pull/4003#discussion_r898450194

Not needed after switching from SQLite to KV.

[algorandskiy]

As note in the comment we might use this https://github.com/algorand/go-algorand/blob/master/util/db/initialize.go#L34 to rewrite migrations and simplify the code.