feat: implement coinank openapi Instruments interface (#1243)

- implement OpenInterestAll,OpenInterestChartV2,OpenInterestSymbolChart,OpenInterestKline in provider/coinank/open_interest.go
- implement OpenInterestAggKline,TickersTopOIByEx,InstrumentsOiVsMc in provider/coinank/open_interest.go

provider/coinank/coinank_enum/interval.go

@@ -0,0 +1,34 @@
+package coinank_enum
+
+type Interval string
+
+const ( //not all interfaces support all interval
+	Second1  Interval = "1s" // one second
+	Second4  Interval = "4s"
+	Second5  Interval = "5s"
+	Second10 Interval = "10s"
+	Second30 Interval = "30s"
+	Minute1  Interval = "1m" // one minute
+	Minute3  Interval = "3m"
+	Minute5  Interval = "5m"
+	Minute10 Interval = "10m"
+	Minute15 Interval = "15m"
+	Minute30 Interval = "30m"
+	Hour1    Interval = "1h" // one hour
+	Hour2    Interval = "2h"
+	Hour4    Interval = "4h"
+	Hour5    Interval = "5h"
+	Hour6    Interval = "6h"
+	Hour8    Interval = "8h"
+	Hour12   Interval = "12h"
+	Day1     Interval = "1d" // one day
+	Day2     Interval = "2d"
+	Day3     Interval = "3d"
+	Day5     Interval = "5d"
+	Week1    Interval = "1w" // one week
+	Week2    Interval = "2w"
+	Month1   Interval = "1M" // one month
+	Month3   Interval = "3M"
+	Month6   Interval = "6M"
+	Year1    Interval = "1y" // one year
+)