chore: Migrate to humantime config parser

[squadgazzz]

Background

Currently, units of config params with the Duration type are hard coded and being parsed using custom functions like duration_from_seconds. In order to switch between the units it's required to change the code which is not flexible.

Details

The humantime library allows us to specify durations in a more human-readable format (e.g., 1s, 2m, 3h). Currently, our configurations use plain numbers (interpreted as seconds), which can be less intuitive and error-prone. This migration will be executed in two distinct phases to ensure smooth transition and maintain compatibility with our existing deployment processes, specifically with Pulumi configurations.

• Phase 1: Supporting Both Formats: The primary goal of the first phase is to update the application to support both the existing plain number format and the new humantime format simultaneously. This is crucial for maintaining system stability and ensuring uninterrupted operations during the migration process.
• Phase 2: Completing the Migration to humantime: Once all the configurations in the Pulumi repository have been updated to the new humantime format, we will initiate the second phase.

Acceptance criteria

• All the config params with Duration-intended types use humantime parser.