* [Fix] Fix failed unit tests caused by the new released numpy

* minor fix

[Visualizer] use FigureManager to manage figure to avoid affecting plt.show() outside Visualizer(#440)

* figure in Visualizer is not managed by plt

* encapsulate code and remove unused code

* update vis backend

* update vis backend

* update vis backend

* update visualizer

* update visualizer

* update visualizer

* update featmap

* update featmap

* update visualizer and unitest

* add draw points unitest and refactor vis_backend

* fix typo and close unitest

* fix comment

* add docstring

* fix comment

* add master only

* fix comment

Co-authored-by: liukuikun <641417025@qq.com>

* [WIP] add inline

* refactor vis module

* [Refactor] according review

* [Fix] fix comment

* fix some error

* Get sub visualizer be Visualizer.get_instance

* fix conflict

* fix lint

* fix unit test

* fix mypy

* fix comment

* fix lint

* update docstr

* update

* update instancedata

* remove replace __mro__ with issubclass

Co-authored-by: PJLAB\huanghaian <1286304229@qq.com>
Co-authored-by: HAOCHENYE <21724054@zju.edu.cn>

* [Enhancement] refactor base data elment

* fix comment

* fix comment

* fix pop not existing key without error

* [WIP] Visualizer

* add draw featmap

* update docstring

* update docstring

* update docstring

* fix comment

* fix comment

* fix comment

* fix comment

* fix comment

* add visualizer unittest

* update

* fix comment

* fix commit

* fix comment

* fix comment