improve consent; implement abort

internal/db/db.go

...brepo/supertokenrepo/transfercoderepo/pollingCodeTmpST.go

internal/endpoints/consent/consent.go

internal/endpoints/nativeredirect/nativeredirectEndpoint.go

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

internal/server/handlers.go

internal/server/server.go

pkg/model/apiError.go

web/partials/error-message.mustache

web/sites/consent.mustache

web/sites/native.abort.mustache

web/static/js/consent.js