[misc] Move shared components to shared directory (#4286)

Moved the following directories:

```
  - management/client → shared/management/client
  - management/domain → shared/management/domain
  - management/proto → shared/management/proto
  - signal/client → shared/signal/client
  - signal/proto → shared/signal/proto
  - relay/client → shared/relay/client
  - relay/auth → shared/relay/auth
```

and adjusted import paths

shared/management/client/rest/events_test.go

@@ -0,0 +1,70 @@
+//go:build integration
+// +build integration
+
+package rest_test
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/netbirdio/netbird/shared/management/client/rest"
+	"github.com/netbirdio/netbird/management/server/http/api"
+	"github.com/netbirdio/netbird/management/server/http/util"
+)
+
+var (
+	testEvent = api.Event{
+		Activity:     "AccountCreate",
+		ActivityCode: api.EventActivityCodeAccountCreate,
+	}
+)
+
+func TestEvents_List_200(t *testing.T) {
+	withMockClient(func(c *rest.Client, mux *http.ServeMux) {
+		mux.HandleFunc("/api/events", func(w http.ResponseWriter, r *http.Request) {
+			retBytes, _ := json.Marshal([]api.Event{testEvent})
+			_, err := w.Write(retBytes)
+			require.NoError(t, err)
+		})
+		ret, err := c.Events.List(context.Background())
+		require.NoError(t, err)
+		assert.Len(t, ret, 1)
+		assert.Equal(t, testEvent, ret[0])
+	})
+}
+
+func TestEvents_List_Err(t *testing.T) {
+	withMockClient(func(c *rest.Client, mux *http.ServeMux) {
+		mux.HandleFunc("/api/events", func(w http.ResponseWriter, r *http.Request) {
+			retBytes, _ := json.Marshal(util.ErrorResponse{Message: "No", Code: 400})
+			w.WriteHeader(400)
+			_, err := w.Write(retBytes)
+			require.NoError(t, err)
+		})
+		ret, err := c.Events.List(context.Background())
+		assert.Error(t, err)
+		assert.Equal(t, "No", err.Error())
+		assert.Empty(t, ret)
+	})
+}
+
+func TestEvents_Integration(t *testing.T) {
+	withBlackBoxServer(t, func(c *rest.Client) {
+		// Do something that would trigger any event
+		_, err := c.SetupKeys.Create(context.Background(), api.CreateSetupKeyRequest{
+			Ephemeral: ptr(true),
+			Name:      "TestSetupKey",
+			Type:      "reusable",
+		})
+		require.NoError(t, err)
+
+		events, err := c.Events.List(context.Background())
+		require.NoError(t, err)
+		assert.NotEmpty(t, events)
+	})
+}