Add simple sniff program

Uses the (rust wrapper) of the official Discord Game SDK to both sniff
the traffic between the SDK and the Discord app, but also just test to
see if bugs are caused by Discord itself rather than our implementation

.gitignore

@@ -1,6 +1,6 @@
 /target
+sniff/target
 **/*.rs.bk
 Cargo.lock
-
 .idea
 .DS_Store

Cargo.toml

@@ -11,6 +11,10 @@ repository = "https://github.com/EmbarkStudios/discord-sdk"
 keywords = ["discord", "games"]
 readme = "README.md"
 
+exclude = [
+    "sniff",
+]
+
 [features]
 # Enables tests that require 2 running Discord applications (stable, canary, or PTB)
 # with a logged in user, see https://discord.com/developers/docs/game-sdk/sdk-starter-guide#testing-locally-with-two-clients

run-sniff.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+set -e
+
+LD_LIBRARY_PATH=$(realpath ./sniff/lib/x86_64) \
+DISCORD_GAME_SDK_PATH=$(realpath ./sniff) \
+cargo run --manifest-path sniff/Cargo.toml

sniff/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "sniff"
+version = "0.1.0"
+authors = ["Jake Shadle <[email protected]>"]
+edition = "2018"
+
+[dependencies]
+discord_game_sdk = "1.0"
+structopt = "0.3"