Create a system proxy change after receiving a network map

This is experimental and needs more test.

the purpose of this change is to validate that a TLS connection stuck using old routes because of keepalive settings on the remote webserver are reset once netbird receives a network map

client/internal/proxy/manager_test.go

@@ -0,0 +1,88 @@
+//go:build darwin && !ios
+
+package proxy
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetActiveNetworkServices(t *testing.T) {
+	services, err := GetActiveNetworkServices()
+	assert.NoError(t, err)
+	assert.NotEmpty(t, services, "should have at least one network service")
+
+	// Check that services don't contain invalid entries
+	for _, service := range services {
+		assert.NotEmpty(t, service)
+		assert.NotContains(t, service, "*")
+	}
+}
+
+func TestManager_EnableDisableWebProxy(t *testing.T) {
+	// Skip this test in CI as it requires admin privileges
+	if testing.Short() {
+		t.Skip("skipping proxy test in short mode")
+	}
+
+	m := NewManager(nil)
+	assert.NotNil(t, m)
+	assert.False(t, m.IsEnabled())
+
+	// This test would require admin privileges to actually enable the proxy
+	// So we just test the basic state management
+}
+
+func TestShutdownState_Name(t *testing.T) {
+	state := &ShutdownState{}
+	assert.Equal(t, "proxy_state", state.Name())
+}
+
+func TestShutdownState_Cleanup_EmptyServices(t *testing.T) {
+	state := &ShutdownState{
+		ModifiedServices: []string{},
+	}
+	err := state.Cleanup()
+	assert.NoError(t, err)
+}
+
+func TestContains(t *testing.T) {
+	tests := []struct {
+		s      string
+		substr string
+		want   bool
+	}{
+		{"Enabled: Yes", "Enabled: Yes", true},
+		{"Enabled: No", "Enabled: Yes", false},
+		{"Server: 127.0.0.1\nEnabled: Yes\nPort: 8080", "Enabled: Yes", true},
+		{"", "Enabled: Yes", false},
+		{"Enabled: Yes", "", true},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.s+"_"+tt.substr, func(t *testing.T) {
+			got := contains(tt.s, tt.substr)
+			assert.Equal(t, tt.want, got)
+		})
+	}
+}
+
+func TestIsProxyEnabled(t *testing.T) {
+	tests := []struct {
+		output string
+		want   bool
+	}{
+		{"Enabled: Yes\nServer: 127.0.0.1\nPort: 8080", true},
+		{"Enabled: No\nServer: \nPort: 0", false},
+		{"Server: 127.0.0.1\nEnabled: Yes\nPort: 8080", true},
+		{"", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.output, func(t *testing.T) {
+			got := isProxyEnabled(tt.output)
+			assert.Equal(t, tt.want, got)
+		})
+	}
+}