feat: space generate --name

[laciferin2024]

Solves #201

Implemented support for picking a name for a space during generation and displaying it in the space list

• Implemented optional --name flag : generate space --name <name>
• Introduced the Space struct

type Space struct {
    DID  did.DID
    Name string
}

• Implemented logic to extract the name fact from delegations and populate the newly created Space struct.
• Verified the logic with space list and space list --json

[laciferin2024]

@Peeja @alanshaw Please review post merge of #300 .

[laciferin2024]

This PR gathers inspiration from the Bacalhau project.

[laciferin2024]

Relates #331