Add SSH public key option to VM create command

[devin-ai-integration]

Add SSH public key option to VM create command

This PR adds a new optional argument --ssh-public-key to the vm create command that allows specifying SSH public keys to be added to the VM. The feature:

• Allows specifying multiple public keys by using the flag multiple times
• Validates that the provided files contain valid SSH public keys
• Base64 encodes the public keys for JSON-safe transmission with newlines
• Passes the public keys to the API for provisioning

Example usage:

# Create a VM with an SSH public key
replicated vm create --distribution ubuntu --version 20.04 --ssh-public-key ~/.ssh/id_rsa.pub

# Create a VM with multiple SSH public keys
replicated vm create --distribution ubuntu --version 20.04 --ssh-public-key ~/.ssh/id_rsa.pub --ssh-public-key ~/.ssh/id_ed25519.pub

Changes:

• Added createVMPublicKeys field to runnerArgs struct
• Added PublicKeys field to CreateVMOpts and CreateVMRequest structs
• Added --ssh-public-key flag to the VM create command
• Created utility function to read and validate SSH public keys
• Added base64 encoding of public keys for JSON-safe transmission

Link to Devin run: https://app.devin.ai/sessions/067166b1cc674933a94c4969c014b8bc
Requested by: [email protected]

[devin-ai-integration]

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