Closes #50: Geth docker addition

[0x0elliot]

Draft PR to keep track of changes. Here is the check list:

Broad target:

• [x] Making the following work:

  >>> from geth import LiveGethProcess
  >>>
  >>> geth = LiveGethProcess(docker=True)

Small targets:

• [x] Add Install support (build + download)
• [x] Add BaseGethProcess start support
• [x] Add BaseGethProcess stop support
• [ ] Rest of the commands.. (slow and steady, towards a stable feature set) (help needed!)

Progress:

Next goal is making the following work for mainnet

• [x] >>> geth.data_dir "~/.ethereum"

• [x] >>> geth.rpc_port 8545

• [x] >>> geth.ipc_path "~/.ethereum/geth.ipc"

• [ ] >>> geth.accounts ['0xd3cda913deb6f67967b99d67acdfa1712c293601']

• [ ] >>> geth.is_alive False

• [ ] >>> geth.is_running False

• [ ] >>> geth.is_stopped False

• [ ] >>> geth.is_alive True # indicates that the subprocess hasn't exited

[0x0elliot]

Progress:

[0x0elliot]

stuck here, eh

[0x0elliot]

why is this happening? this is the command being used by the wrapper right now to get accounts but it fails both on execution because of this error @pacrob 🤔

any help is appreciated, though, i will figure this out soon