feat: ✨ added start and end time to be display on timeline for day an…

[apurva010]

• Added start and end time to be display on time line for day and week view.
• Refer @jaiminrana05's code for start time to be display on timeline for day and week view. #280

Description

Checklist

• [x] The title of my PR starts with a Conventional Commit prefix (fix:, feat:, docs: etc).
• [x] I have followed the Contributor Guide when preparing my PR.
• [ ] I have updated/added tests for ALL new/updated/fixed functionality.
• [x] I have updated/added relevant documentation in docs and added dartdoc comments with ///.
• [x] I have updated/added relevant examples in examples or docs.

Breaking Change?

• [ ] Yes, this PR is a breaking change.
• [x] No, this PR is not a breaking change.

Related Issues

Closes #267

[vatsaltanna-simformsolutions]

This PR doesn't display the timeline in the right spot when the timeline is in start hour, we will not merge this PR until we come up with a better solution.

[ParthBaraiya]

Will create the new PR once the changes are done