Add `miden-node bundled dev` command for local development

[marijamijailovic]

To whom is this feature for?

App developer

Why is is this feature needed?

Currently, getting a local Miden node running requires multiple steps: bootstrapping genesis, configuring validator keys, setting up the data directory. This slows down developers who just want a local network to test against.

How is this feature used?

A developer runs a single command miden-node bundled dev - similar to Foundry's anvil, and gets a fully running local Miden network. On every invocation the command:

1. Clean the data directory - on every invocation to ensure a fresh state.
2. Bootstrap genesis — use a genesis config (ex. 5 wallets with 10,000 MIDEN tokens each) and the insecure development key. Also, accept a custom --genesis-config-file.
3. Start all components — launch RPC, block producer, store, and validator as in bundled start.
4. Print created accounts (address + name) and the RPC URL so the developer knows what's available.

Anything else?

This is part of the midenup improvement proposal: 0xMiden/midenup#108

[SantiagoPittella]

You might be interested in #1765 which I think solves your problem. An implementation is already in place in this PR #1786

[igamigo]

Additionally, if you are testing while developing on the client, in the client repo root you can also do make start-node which will spin up a compatible, temp testing node (though this is not ideal either).