enable consent screen on oidc-agent

internal/endpoints/consent/consent.go

internal/endpoints/consent/pkg/consentrequest.go

internal/server/middlerwares.go

internal/server/server.go

internal/server/web/layouts/main-no-container.mustache

internal/server/web/layouts/main.mustache

internal/server/web/partials/navbar.mustache

internal/server/web/partials/scripts.mustache

internal/server/web/partials/style.mustache

internal/server/web/sites/consent.mustache

internal/server/web/static/css/mytoken.css

internal/server/web/static/js/consent-send.js

internal/server/web/static/js/consent.js

internal/server/web/static/js/discovery.js

internal/server/web/static/js/restr-gui.js