add eigenDA client protos

[juanbono]

This PR adds the generated modules for the eigenDA protobuffs.

Auth will be implemented in another PR.

[github-actions]

Hey there! 👋🏼

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[juan518munoz]

prost is available as a workspace dependency.

[juanbono]

the prost version used workspace wide is older than the one required for tonic. I added a comment explaining that

[gianbelinche]

Do we need this go package?
Same with other files

[juanbono]

I added the proto files just to know where the compiled code comes from.