Make sure devtools are only used in `internal/<language>`

[AtzeDeVries]

we preferably only should use internal/devtools in internal/<language>.

An approach to test this would be like this

https://github.com/coopnorge/store-information-service/blob/main/store-information/architecture/architecture_test.go

[AtzeDeVries]

Example of 'miss use'

https://github.com/coopnorge/mage/pull/438/changes#diff-0911ad6de919766f0cb9e05cf15e1f28a267907a49a744d264e49fd7f9808bc7L199