akm v0.1.0 migration notes

• The package and project were rebranded from Agent-i-Kit to akm.
• Update package references from agent-i-kit to akm-cli.
• Update config, registry, plugin, path, and environment-variable references from agent-i-kit / AGENT_I_KIT_* to akm / AKM_*.
• The tool asset type and submit command were removed.