[BAZK] Frontend create contribution

[veigajoao]

Implement the behavior of creating a new contribution to a ceremony.

Currently, it's only possible to create ceremonies via the command line

Todo:

• [ ] Implement contract integrations to create a new contribution

Dependencies:

• [ ] The contract needs to be able to generate a new contribution

[1Mateus]

@p-destri Do you like this issue template? With 'todo' and dependencies?