Create a CELO compatible fork of ganache monorepo

[soloseng]

A fork of Ganache that is compatible with CELO.

Tasks

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1. Adding precompiles to be deployed during chain genesis
2. Adding support for optional celo fee currency
3. Adding support for personal decrypt

Related PR

[soloseng]

Current working branch:
https://github.com/celo-org/ganache/tree/soloseng/CELO-support

These changes have not yet been published.

[soloseng]

Original ganache-core fork did not actually support fee currency payment.

When submitting a transaction using any stable token, the stableToken amount does not actually get decremented.

Question now is:

To what extent do we want to add that functionality to ganache?

NB: fee currency works properly in e2e test, when using geth

[soloseng]

Released an unofficial ganache fork NPM package under the @celo namespace

link to the repo