can we save the pagination setting to the chart metadata

[J71-haha]

A clear and concise description of what the bug is.
The superset chart table sets the number of pagination rows to select the setting, and add the option of whether to select all

like this

How to reproduce the bug

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected results

what you expected to happen.

Actual results

what actually happens.

Screenshots

If applicable, add screenshots to help explain your problem.

Environment

(please complete the following information):

• browser type and version:
• superset version: superset version ：1.3.2
• python version: python --version：3.7
• node.js version: node -v
• any feature flags active:

Checklist

Make sure to follow these steps before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if there are any.
• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven't found one similar.

Additional context

Add any other context about the problem here.

[junlincc]

make sense. should be an easy enhancement. Contribution is welcome! we are happy to guide you through the contribution process! :)

[Carlosbogo]

Hi, I would love to help with this, but I am still getting used to working with github and I haven't worked in this repository before. Is there anyone already working on this? If not, I would like to start working on it.

[zhaoyongjie]

Hi @Carlosbogo, welcome to contribution, if you need to help, feel free ping me any time.

[Carlosbogo]

Sorry for the delay, but I'm not sure if I understand the issue correctly:
Should the chart show the total number of entries instead of just "all" or am I missing the point?