Use `PlaceOS/core-client` for forwarding execute requests

[github-actions]

Use PlaceOS::Core::Client.
This will ensure that the interface between cores is consistent and versioned.

core/src/placeos-core/process_manager/local.cr

Lines 114 to 120 in b938d43

	# TODO: Use `PlaceOS/core-client` for forwarding execute requests
	core_uri.path = "/api/core/v1/command/#{remote_module_id}/execute"
	response = HTTP::Client.post(
	core_uri,
	headers: HTTP::Headers{"X-Request-ID" => "int-#{request.reply}-#{remote_module_id}-#{Time.utc.to_unix_ms}"},
	body: request.payload.not_nil!,
	)