♻ Move project source files to top level from src, update Sentry dependency (#630)

Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>

backend/scripts/format-imports.sh

@@ -0,0 +1,6 @@
+#!/bin/sh -e
+set -x
+
+# Sort imports one per line, so autoflake can remove unused imports
+isort --recursive  --force-single-line-imports --apply app
+sh ./scripts/format.sh