Add namespace dropdown (#67)

* add get namespace endpoint

* add namespace dropdown

* misc fix

pkg/dashboard/api.go

@@ -2,14 +2,15 @@ package dashboard
 
 import (
 	"embed"
+	"net/http"
+	"os"
+	"path"
+
 	"github.com/gin-gonic/gin"
 	"github.com/komodorio/helm-dashboard/pkg/dashboard/handlers"
 	"github.com/komodorio/helm-dashboard/pkg/dashboard/subproc"
 	"github.com/komodorio/helm-dashboard/pkg/dashboard/utils"
 	log "github.com/sirupsen/logrus"
-	"net/http"
-	"os"
-	"path"
 )
 
 //go:embed static/*
@@ -106,6 +107,7 @@ func configureKubectls(api *gin.RouterGroup, data *subproc.DataLayer) {
 	api.GET("/contexts", h.GetContexts)
 	api.GET("/resources/:kind", h.GetResourceInfo)
 	api.GET("/describe/:kind", h.Describe)
+	api.GET("/namespaces", h.GetNameSpaces)
 }
 
 func configureStatic(api *gin.Engine) {