Add singular/plural aliases to resource commands

[sjmiller609]

Summary

• Adds plural aliases to singular resource commands (image → images, volume → volumes, etc.)
• Adds singular alias to resources → resource
• Adds builds alias to build command
• All subcommands automatically work via either form (e.g. hypeman images list = hypeman image list)

Uses urfave/cli's built-in Aliases field — no structural changes.

Commands updated

Primary	Alias
image	images
volume	volumes
snapshot	snapshots
device	devices
ingress	ingresses
build	builds
resources	resource

Test plan

• go build ./... passes
• go test ./... passes

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Note

Low Risk
Low risk: adds urfave/cli command Aliases for several top-level commands without changing execution paths, API calls, or data handling.

Overview
Adds singular/plural aliases for multiple top-level CLI commands so users can invoke the same subcommands via either form (e.g., image/images, volume/volumes, snapshot/snapshots, device/devices, ingress/ingresses, resources/resource, build/builds). No functional logic changes beyond expanding accepted command names via urfave/cli’s Aliases field.

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