Build homepage dashboard using ECharts.

[Helltab]

[Helltab]

I will do this

[chickenlj]

Please also add Echarts support for the following data. Better in a separate column/group with previous data already exists on homepage.

endpoint: /cluster/metadata

data:

{
	"versions": ["dubbo-golang-3.0.4"],
	"protocols": ["tri"],
	"rules": [],
        "configCenter": "127.0.0.1:2181",
	"registry": "127.0.0.1:2181",
	"metadataCenter": "127.0.0.1:2181",
	"grafana": "127.0.0.1:3000",
	"prometheus": "127.0.0.1:9090"
}