Client p2p: Pretty print p2p stat

What

Pretty prints p2p stat

Why

Because who wouldn't want this:

How

p2p full stat is currently available through ./octez-admin-client p2p stat

• The first commit moves the printing part from the client to an RPC definition in p2p_services
• The second commit adds colours and emphasis when creating a string to print
• The third commit adds the possibility to disable colours (with -c or --no-color)
• The fourth commit is an utility commit that move some code blocks to their own function that will be reused in the fifth commit
• Finally, the fifth commit creates an RPC that returns the full stats as a JSON

The RPC is not available when on insecure connection (secure ACL policy enabled)

Manually testing the MR

• Start a node:

  ./octez-node run --data-dir <your_data_dir> --allow-all-rpc localhost:8732 --rpc-addr localhost:8732

• In a second terminal, request stats with either

  ./octez-admin-client p2p stat

  ./octez-admin-client p2p stat -c

  ./octez-admin-client p2p stat --no-color

  ./octez-client rpc get /network/full_stat

If you start it with

./octez-node run --data-dir <your_data_dir> --rpc-addr 0.0.0.0:8732

You should receive:

./octez-admin-client rpc get /network/full_stat
Fatal error:
  [HTTP 403] Access denied to: http://localhost:8732

Checklist

• Document the interface of any function added or modified (see the coding guidelines)
• Document any change to the user interface, including configuration parameters (see node configuration)
• Provide automatic testing (see the testing guide).
• For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
• Select suitable reviewers using the Reviewers field below.
• Select as Assignee the next person who should take action on that MR