feat: abra server ls

WE DID IT! The first actual command to be ported.

Code is still a mess in terms of UX but its a milestone!

cli/server.go

@@ -3,6 +3,8 @@ package cli
 import (
 	"fmt"
 
+	"coopcloud.tech/abra/client"
+	"coopcloud.tech/abra/config"
 	"github.com/urfave/cli/v2"
 )
 
@@ -12,6 +14,33 @@ var serverListCommand = &cli.Command{
 	Usage:     "List locally-defined servers.",
 	ArgsUsage: emptyArgsUsage,
 	HideHelp:  true,
+	Action: func(c *cli.Context) error {
+		dockerContextStore := client.NewDefaultDockerContextStore()
+		contexts, err := dockerContextStore.Store.List()
+		if err != nil {
+			panic(err)
+		}
+		tableColumns := []string{"Name", "Connection"}
+		table := createTable(tableColumns)
+		defer table.Render()
+
+		serverNames := config.ReadServerNames()
+		for _, serverName := range serverNames {
+			var row []string
+			for _, ctx := range contexts {
+				if ctx.Name == serverName {
+					row = []string{serverName, client.GetContextEndpoint(ctx)}
+				}
+			}
+			if len(row) == 0 {
+				row = []string{serverName, "UNKNOWN"}
+			}
+			table.Append(row)
+
+		}
+		return nil
+
+	},
 }
 
 var serverAddCommand = &cli.Command{