Small improvements to CLI experience (#2136)

* Small improvements to CLI experience

* Add tests

* Add test server for cli testing

* Add LOGO logging to reloader and some additional context to logging debug

* Cleanup tests

tests/fake/server.py

@@ -0,0 +1,32 @@
+import json
+import logging
+
+from sanic import Sanic, text
+from sanic.log import LOGGING_CONFIG_DEFAULTS, logger
+
+
+LOGGING_CONFIG = {**LOGGING_CONFIG_DEFAULTS}
+LOGGING_CONFIG["formatters"]["generic"]["format"] = "%(message)s"
+LOGGING_CONFIG["loggers"]["sanic.root"]["level"] = "DEBUG"
+
+app = Sanic(__name__, log_config=LOGGING_CONFIG)
+
+
+@app.get("/")
+async def handler(request):
+    return text(request.ip)
+
+
+@app.before_server_start
+async def app_info_dump(app: Sanic, _):
+    app_data = {
+        "access_log": app.config.ACCESS_LOG,
+        "auto_reload": app.auto_reload,
+        "debug": app.debug,
+    }
+    logger.info(json.dumps(app_data))
+
+
+@app.after_server_start
+async def shutdown(app: Sanic, _):
+    app.stop()