tools (common/template): add 2 new filters: `timestamp_to_hour` and `delta_to_human`: `timestamp_to_hour` give the hour corresponding to a timestamp, it will be used to display calendar for this time window. `delta_to_human` convert a delta of 2 timestamp to human readable time using `tools.common.date_utils` corresponding function.

syntax: glob
*.pyc
*.pyv
*.swp
*.swo
tags
twistd.log
twistd.pid
bridge_constructor/generated
tests/e2e/report*
_trial_temp/
sat.egg-info
*.un~
dist
MANIFEST
build
ctags_links/
Session.vim
.build
.pytest_cache
env/
.eggs/
libervia_backend.egg-info/
.mypy_cache/
twisted/plugins/dropin.cache