Switched the tagged_blob invocations to espresso-systems-common

[VictorKoenders]

After a discussion in zulip we wanted to make sure there are no conflicting TaggedBase64 tags between all the projects. The simplest way to do this was to make a repo that contains all the tags as constants. For this I've made https://github.com/EspressoSystems/espresso-systems-common

This PR replaces the hardcoded tags with the constants in that crate.

[CLAassistant]

All committers have signed the CLA.