refactor structure

cmd/mytoken-server/mytoken-setup/setup.go

internal/db/dbrepo/accesstokenrepo/accessToken.go

internal/db/dbrepo/authcodeinforepo/authcodeInfo.go

internal/db/dbrepo/eventrepo/event.go

internal/db/dbrepo/supertokenrepo/supertoken.go

.../db/dbrepo/supertokenrepo/supertokenrepohelper/helpers.go

internal/endpoints/revocation/revocationEndpoint.go

internal/endpoints/token/access/accessTokenEndpoint.go

internal/endpoints/token/access/pkg/accessTokenRequest.go

internal/endpoints/token/super/pkg/authCodeFlowRequest.go

internal/endpoints/token/super/pkg/superTokenRequest.go

internal/endpoints/token/super/pkg/superTokenResponse.go

internal/endpoints/token/super/polling/pollingEndpoint.go

internal/endpoints/token/super/supertokenEndpoint.go

internal/endpoints/token/super/transferEndpoint.go

internal/oidc/authcode/authcode.go

pkg/mytokenlib/accesstoken.go

pkg/mytokenlib/supertoken.go

shared/supertoken/capabilities/capability.go

shared/supertoken/capabilities/capability_test.go