Feat: Badge add some new features.

[wangdaodao]

Please make sure these boxes are checked before submitting your PR, thank you!

Porting element plus functionality:

Attribute	Description	Type	Accepted Values	Default
show-zero	Whether to show badge when value is zero.	boolean	—	true
background-color	background color of the dot	string	—	—
offset	offset of badge	[ left:number, top:number ]	—	—
badge-style	custom style of badge	object	—	—
badge-class	custom class of badge	string	—	—

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• Add some descriptions and refer relative issues for you PR.

[github-actions]

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