[Chore] Added page to debug time zone issue

[alexjustesen]

Description

This PR introduces a timezone debut page located at /debug/timezone which can be used to help resolve local time issues.

🤔 but how do I know if I have a problem?

• PHP time zone should always read UTC.
• App time zone should always read UTC.
• Settings time zone should reflect the same value as the UI with the correct offset for you time zone vs. UTC.
• UTC time should be the correct time.
• Local time should be the correct local time factoring in the time zone setting.

Changelog

Added

• time zone debug page

Screenshots

[hoorna]

• Local time should be the correct local time factoring in the time zone setting.

What do you mean with "in the time zone setting". Are you referring here to the TZ environment variable?

[alexjustesen]

• Local time should be the correct local time factoring in the time zone setting.

What do you mean with "in the time zone setting". Are you referring here to the TZ environment variable?

In the application under Settings and General.

[hoorna]

Thanks!