[Feat] DigitalOcean Analyzer

[abmussani]

Description:

This PR implements an analyzer for DigitalOcean.

CLI Output:

[!] Valid DigitalOcean API key

[i] User: sevoma (s******@gmail.com)

[i] Permissions:
+-----------------------------+
| PERMISSION                  |
+-----------------------------+
| domain:read                 |
| certificate:read            |
| container_registry:read     |
| cdn_endpoint:read           |
| billing:read                |
| one_click:read              |
| droplet_autoscale_pool:read |
| droplet:read                |
| firewall:read               |
| database:read               |
| floating_ip:read            |
| namespace:read              |
| load_balancer:read          |
| project:read                |
| action:read                 |
| reserved_ip:read            |
| region:read                 |
| size:read                   |
| monitoring:read             |
| ssh_key:read                |
| tag:read                    |
| snapshot:read               |
| uptime:read                 |
| image:read                  |
| vpc:read                    |
| block_storage:read          |
| genai_agent:read            |
| vpc_peering:read            |
| kubernetes:read             |
| domain_record:read          |
| app:read                    |
+-----------------------------+

Test Output:

$go test ./pkg/analyzer/analyzers/digitalocean/
ok  	github.com/trufflesecurity/trufflehog/v3/pkg/analyzer/analyzers/digitalocean

Checklist:

• Tests passing (make test-community)?
• Lint passing (make lint this requires golangci-lint)?