Add example usage of deploy and assets directory

Author: meowmeowahr

assets/example.txt

@@ -0,0 +1 @@
+This text is in the assets directory

deploy/example.txt

@@ -0,0 +1 @@
+This text is in the deploy directory

src/kevinbotlib_deploytool_example/main.py

@@ -9,3 +9,9 @@ def __init__(self):
     def opmode_init(self, opmode: str, enabled: bool) -> None:
         super().opmode_init(opmode, enabled)
         print("Example robot started up...")  # noqa: T201
+
+        with open("deploy/example.txt", "r") as f:
+            print(f.read())
+
+        with open("assets/example.txt", "r") as f:
+            print(f.read())