cubicweb-sentry #17139445 handle Public DSN [validation pending]

Usage of public DSN is recommended with JavaScript, we should provide an addionnal configuration option for this.

prioritynormal
typeenhancement
done in<not specified>
load left0.000
closed by#36a11c8027b3 Add a "sentry-public-dsn" option
patchAdd a "sentry-public-dsn" option [applied]