Add Bootstrap script to store a credential in the vc-auth agent

[Gavinok]

This PR resolves #900

Here we add a script to store a credential in vc-authn

[coveralls]

Pull Request Test Coverage Report for Build 19902614254

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 87.716%

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Totals
Change from base Build 19825684003:	0.0%
Covered Lines:	1928
Relevant Lines:	2198

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💛 - Coveralls

[esune]

This looks great, thanks @Gavinok - only a comment about the schema name needing to be more deterministic and wondering if we should split the issuer compose configuration to a separate file (i.e.: the ngrok compose file) in order to reduce the number of services required by default to run VC-AuthN locally 🤔

[Gavinok]

@esune On the topic of seperating these into seperate files there shouldn't be any need to run the issuer if it isn't used. By default the issuer is not started unless the ./manage bootstrap is run. I don't see any reason not to split this off into a new docker compose though since there isn't any direct connection.

[esune]

Nit.: let's update the agent image to a recent one (probably good to do also for the VC-AuthN verifier agent) and then we're good to go

[esune]

👍🏻