[#1284] Adjust the design documentation

[HCY123902]

Resolves #1284
Commit message:

Add the documentation for v_resizer.js and adjust
the documentation of api.js

There seems to be some deviation between the
implementation and documentation of api.js. The
documentation of v_resizer.js also seems to be missing.

Adjusting the existing documentation may make it more
consistent with the current implementation.

Lets's adjust the documentation of api.js and add the
documentation for v_resizer.js.

I did not split this PR into 2 separate ones because the problems mentioned above is included in a single issue.

[Tejas2805]

Not too sure but I think there are changes required in the diagram too if I am correct. @fzdy1914 Your opinion?

[fzdy1914]

Let's edit this documentation after the whole morphing of frontend code first. It is kind of acceptable now.

[github-actions]

Hi,
We are going to mark this PR as stale because it has been inactive for the past 30 days.
If no further activity occurs within the following 7 days, it will be automatically closed so that others can take up the issue.
If you are still working on this PR, please make a follow-up commit within 7 days and leave a comment to remove the stale label.
Do let us know if you are stuck so that we can help you!'

[HCY123902]

Sure, no problem

[github-actions]

Hi,
We are going to mark this PR as stale because it has been inactive for the past 30 days.
If no further activity occurs within the following 7 days, it will be automatically closed so that others can take up the issue.
If you are still working on this PR, please make a follow-up commit within 7 days and leave a comment to remove the stale label.
Do let us know if you are stuck so that we can help you!'

[HCY123902]

This pull request is ongoing and it will adapt to the change in implementation

[github-actions]

Hi,
We are going to mark this PR as stale because it has been inactive for the past 30 days.
If no further activity occurs within the following 7 days, it will be automatically closed so that others can take up the issue.
If you are still working on this PR, please make a follow-up commit within 7 days and leave a comment to remove the stale label.
Do let us know if you are stuck so that we can help you!'

[github-actions]

This PR was closed because it has been marked as stale for 7 days with no activity.
Feel free to reopen this PR if you would like to continue working on it.