Add max and min expiration time

[MarekMichali]

Description

Changes proposed in this pull request:

• Set max expiration time to 2 h
• Set min expiration time to 10 min
• Make binding config parameters configurable from chart
• Add unit tests
• Update docs

Related issue(s)

See #1202

[kyma-bot]

Skipping CI for Draft Pull Request. If you want CI signal for your change, please convert it to an actual PR. You can still manually trigger a test run with /test all

[github-actions[bot]]

Add one of following labels

- kind/feature -> Use it when you want to submit a new feature

- kind/enhancement -> Use it when you modify or improve an existing feature

- kind/bug -> Use it when you fix a bug

[MarekMichali]

/kind enhancement