Add command line options for setting log level and file

Two command line options are added for setting the Felis log level and,
optionally, an output file for log messages. The log level is set using
the "log-level" option and the output file using "log-file." These
should match similar options in the lsst/daf_butler repo.

python/felis/cli.py

@@ -45,12 +45,30 @@
 
 logger = logging.getLogger("felis")
 
+loglevel_choices = ["CRITICAL", "FATAL", "ERROR", "WARNING", "INFO", "DEBUG"]
+
 
 @click.group()
 @click.version_option(__version__)
-def cli() -> None:
+@click.option(
+    "--log-level",
+    type=click.Choice(loglevel_choices),
+    envvar="FELIS_LOGLEVEL",
+    help="Felis log level",
+    default=logging.getLevelName(logging.INFO),
+)
+@click.option(
+    "--log-file",
+    type=click.Path(),
+    envvar="FELIS_LOGFILE",
+    help="Felis log file path",
+)
+def cli(log_level: str, log_file: str | None) -> None:
     """Felis Command Line Tools."""
-    logging.basicConfig(level=logging.INFO)
+    if log_file:
+        logging.basicConfig(filename=log_file, level=log_level)
+    else:
+        logging.basicConfig(level=log_level)
 
 
 @cli.command("create-all")