a bunch of minor changes combined:

- From instead of Into
- unsafe_data_ref for other payloads
- CByteSlice for returning memory spans
- send Packet instead of Into<Packet>
- expose packet layer to C/C#

Cargo.toml

@@ -0,0 +1,11 @@
+[workspace]
+resolver = "2"
+members = [
+    "servicepoint2",
+    "servicepoint2-binding-cs",
+    "examples/announce",
+    "examples/game_of_life",
+    "examples/moving_line",
+    "examples/wiping_clear",
+    "examples/random_brightness"
+]