* feat: 🎸 create helper Create `time-remaining` helper to track remaining session time. ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-10519 * refactor: 💡 Clean up code for time-remaining helper Moved time remaining helper into `core` addons folder. Cleaned up the `time-remaining` helper to use the `DurationUnitFormat` service. ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-10519 * Update session.hbs removed test implementation * refactor: 💡 files added for helper files added for helper ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-10519 * Update session.hbs fix linting * refactor: 💡 fix uneeded spacing Fix spacing on hbs file used for testing time-remaining helper ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-10519 * refactor: 💡 refactor time-remaining helper Cleaned up code that was returning a string if `differenceInSeconds` was less than or equal to zero. Code is now conditionally checking in the `differenceInSeconds` variable if the `difference` is greater than zero. If it is not then it will return zero and let the `DurationUnitFormat` handle the rest. ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-10519 * refactor: 💡 fix failing test Fix failing `time-remaining` test ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-10519