[wip] platform/api: add Hetzner API

Signed-off-by: Mathieu Tortuyaux <mtortuyaux@microsoft.com>

platform/api/hetzner/api.go

@@ -0,0 +1,52 @@
+// Copyright The Mantle Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package hetzner
+
+import (
+	"context"
+	"time"
+
+	"github.com/flatcar/mantle/platform"
+
+	"github.com/hetznercloud/hcloud-go/v2/hcloud"
+)
+
+// Options hold the specific Hetzner options.
+type Options struct {
+	*platform.Options
+	// Image is the ID of the Hetzner image to deploy.
+	Image string
+	// InstanceType is the type of the instance (e.g cx11).
+	InstanceType string
+	// Location is used as "default" zone for all requests.
+	Location string
+	// Token is used to construct the Hetzner client
+	Token string
+}
+
+// API is a wrapper around Hetzner instance API.
+type API struct {
+	opts   *Options
+	client *hcloud.Client
+}
+
+type Server struct{ *hcloud.Server }
+
+// New returns a Hetzner API instance.
+func New(opts *Options) (*API, error) {
+	return nil, nil
+}
+
+// CreateServer using the Hetzner API.
+func (a *API) CreateServer(ctx context.Context, name, userdata string) (*Server, error) {
+	return nil, nil
+}
+
+func (a *API) DeleteServer(ctx context.Context, id string) error { return nil }
+
+// GC is the garbage collection (when we want to clear the project from resources created by Mantle (servers, images, etc.))
+func (a *API) GC(ctx context.Context, gracePeriod time.Duration) error { return nil }
+
+// GetConsoleOutput returns the console output using API calls or other.
+func (a *API) GetConsoleOutput(id string) (string, error) { return "", nil }