Clean up and improve UX when creating a new project

[pinheadmz]

I wrote these changes in response to recent user experience by core devs testing code deployments like v29 release and erlay.

The main changes are:

• Less example files in new project
• Always create a custom network - no one ever needs 6_node_bitcoin
• Expand the options in inquirer:
  • combine different versions
  • add custom images

Below is an example transcript creating a network with 4x "27.0" nodes and 1x custom erlay node:

(.venv) --> warnet create
[?] Enter your network name: test
   Current Network Population
┏━━━━━━━━━┳━━━━━━━┳━━━━━━━━━━━━━┓
┃ Version ┃ Count ┃ Connections ┃
┡━━━━━━━━━╇━━━━━━━╇━━━━━━━━━━━━━┩
└─────────┴───────┴─────────────┘
[?] How many nodes to add? (0 = done):
   0
 > 4
   8
   12
   20
   50
   other

[?] Which version would you like to add to network?:
   other
 > 27.0
   26.0
   25.1
   24.2
   23.2
   22.2

[?] How many connections would you like each of these nodes to have?:
   0
   1
 > 2
   8
   12
   other

   Current Network Population
┏━━━━━━━━━┳━━━━━━━┳━━━━━━━━━━━━━┓
┃ Version ┃ Count ┃ Connections ┃
┡━━━━━━━━━╇━━━━━━━╇━━━━━━━━━━━━━┩
│ 27.0    │ 4     │ 2           │
└─────────┴───────┴─────────────┘
[?] How many nodes to add? (0 = done):
   0
   4
   8
   12
   20
   50
 > other

[?] Enter the number of nodes: 1
[?] Which version would you like to add to network?:
 > other
   27.0
   26.0
   25.1
   24.2
   23.2
   22.2

[?] How many connections would you like each of these nodes to have?:
   0
   1
 > 2
   8
   12
   other

[?] Provide dockerhub repository/image:tag: srgi/bitcoin:99.0.0-erlay-full-169d
                 Current Network Population
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━┳━━━━━━━━━━━━━┓
┃ Version                             ┃ Count ┃ Connections ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━╇━━━━━━━━━━━━━┩
│ 27.0                                │ 4     │ 2           │
│ srgi/bitcoin:99.0.0-erlay-full-169d │ 1     │ 2           │
└─────────────────────────────────────┴───────┴─────────────┘
[?] How many nodes to add? (0 = done):
 > 0
   4
   8
   12
   20
   50
   other


Would you like to enable fork-observer on the network? [True]:

How often would you like fork-observer to query node status (seconds)? [20]:

Would you like to enable grafana logging on the network? [False]:

Generating custom network...
Project '/Users/matthewzipkin/Desktop/w/networks/test' has been created with 'network.yaml' and 'node-defaults.yaml'.

New network created successfully!

Run the following command to deploy this network:
warnet deploy /Users/matthewzipkin/Desktop/w/networks/test