Uniform the timedelta format in ENV vars

[giancarloromeo]

Context & Motivation

Pydantic v2 changed the accepted str format for datetime and timedelta (compared to v1).

Current status

In ENV vars, timings have different formats and sometimes, without knowing the implementation, it's not easy to understand if we are talking about seconds, mins, hours or days from simple scalar numbers.

Action

Uniform all the intervals, timeouts etc. to a standard format.

Legenda:

🚨 BREAKING CHANGE
⚠️ WARNING

DYNAMIC_SIDECAR_API_SAVE_RESTORE_STATE_TIMEOUT 🚨

After migration to Pydantic v2, it's a dt.timedelta instead of PositiveInt.

Ops-Config

• Master: MR 1101
• Staging: MR 1104
• Production: MR 1105

PROJECTS_INACTIVITY_INTERVAL ⚠️

Currently, the ENV var represents seconds and is implicitily validated against timedelta but with a warning.

Ops-Config:

• All: MR 1113

### ENV vars that need changes
- [x] `DYNAMIC_SIDECAR_API_SAVE_RESTORE_STATE_TIMEOUT` included in #6578
- [ ] https://github.com/ITISFoundation/osparc-simcore/pull/6797
- [ ] https://github.com/ITISFoundation/osparc-simcore/pull/6812