When running aurweb with hot-reloading, the CPU consumption is quite high.
This is because it is using "StatReload" for detecting modified files.
(which seems to be rather inefficient)

When "watchfiles" is installed it'll automatically usees that instead and
CPU load goes down to 1%.
watchfiles uses filesystem events for detecting changes and is way more efficient.

Signed-off-by: moson-mo <mo-son@mailbox.org>