## Description
This PR introduces autosave functionality for this feedback session page. The way that I implemented it ensures that users' responses are automatically saved after they have made a change.
## Some key changes
#### 1. Autosave Implementation
- Added autosave method + events to handle the autosaving of feedback responses to local storage
- Used timeout that is started upon change in input because periodic intervals might create a potential window where the user refreshes the page before the save kicks in. And saving every input change might waste resources. So I feel that this is a best of both worlds approach to saving the data.
#### 2. Loading autosaved data
- Lazy loading of feedback session only when the question itself is in the viewport
#### 3. Reset
- Added a way for users to reset their response to the last submitted state so I like to think of it as a `git reset --hard` to help users get back to the original previous data that they had.
- And I also made a few UI changes to add the buttons in to reset the data
## Video Demo
Below is a video showcasing a really quick demo of what I've done:
https://github.com/Respirayson/teammates/assets/88478542/5eb944dc-37b2-4925-9b49-f46c22991558
And some screenshots:
Tooltip for relevant info
Reset button disabled when there are no changes
Also updated the grouped and ungrouped questions' UI
Fixes #12749
Outline of Solution
## Description This PR introduces autosave functionality for this feedback session page. The way that I implemented it ensures that users' responses are automatically saved after they have made a change. ## Some key changes #### 1. Autosave Implementation - Added autosave method + events to handle the autosaving of feedback responses to local storage - Used timeout that is started upon change in input because periodic intervals might create a potential window where the user refreshes the page before the save kicks in. And saving every input change might waste resources. So I feel that this is a best of both worlds approach to saving the data. #### 2. Loading autosaved data - Lazy loading of feedback session only when the question itself is in the viewport #### 3. Reset - Added a way for users to reset their response to the last submitted state so I like to think of it as a `git reset --hard` to help users get back to the original previous data that they had. - And I also made a few UI changes to add the buttons in to reset the data ## Video Demo Below is a video showcasing a really quick demo of what I've done: https://github.com/Respirayson/teammates/assets/88478542/5eb944dc-37b2-4925-9b49-f46c22991558 And some screenshots: Tooltip for relevant info  Reset button disabled when there are no changes  Also updated the grouped and ungrouped questions' UI 