internal/pipewire: implement Core::Destroy

This change also implements pending destructible check on Sync. Destruction method should always be implemented as a wrapper of destructible.destroy.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/pipewire/core_test.go

@@ -365,6 +365,24 @@ func TestCoreCreateObject(t *testing.T) {
 	}.run(t)
 }
 
+func TestCoreDestroy(t *testing.T) {
+	t.Parallel()
+
+	encodingTestCases[pipewire.CoreDestroy, *pipewire.CoreDestroy]{
+		{"sample", []byte{
+			/* size: rest of data */ 0x10, 0, 0, 0,
+			/* type: Struct */ 0xe, 0, 0, 0,
+
+			/* size: 4 bytes */ 4, 0, 0, 0,
+			/* type: Int */ 4, 0, 0, 0,
+			/* value: 3 */ 3, 0, 0, 0,
+			/* padding */ 0, 0, 0, 0,
+		}, pipewire.CoreDestroy{
+			ID: 3,
+		}, nil},
+	}.run(t)
+}
+
 func TestRegistryGlobal(t *testing.T) {
 	t.Parallel()