[scripts] add a script for inspecting Discord snowflakes

scripts/discord-snowflake

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+
+# https://discord.com/developers/docs/reference#snowflakes
+
+import sys
+import colorama
+import time
+
+DISCORD_EPOCH = 1420070400000  # milliseconds
+
+user_snowflake = int(sys.argv[1])
+
+
+def print_field(name, value):
+    print(
+        "{}{}:{} {}".format(
+            colorama.Style.BRIGHT, name.rjust(21), colorama.Style.RESET_ALL, value
+        )
+    )
+
+
+creation_time = (user_snowflake >> 22) + DISCORD_EPOCH
+internal_worker_id = (user_snowflake >> 17) & 0x1F
+internal_process_id = (user_snowflake >> 12) & 0x1F
+increment = user_snowflake & 0xFFF
+
+print_field(
+    "Created at",
+    "{}.{}".format(
+        time.strftime("%Y-%m-%d %H:%M:%S", time.gmtime(creation_time // 1000)),
+        creation_time % 1000,
+    ),
+)
+print_field("Internal worker ID", internal_worker_id)
+print_field("Internal process ID", internal_process_id)
+print_field("Increment", increment)