feat: add x-platform progress bars for long loads

Closes coop-cloud/organising#150.

cli/catalogue/generate.go

@@ -5,6 +5,7 @@ import (
 	"io/ioutil"
 	"path"
 
+	"coopcloud.tech/abra/cli/formatter"
 	"coopcloud.tech/abra/pkg/catalogue"
 	"coopcloud.tech/abra/pkg/config"
 	"coopcloud.tech/abra/pkg/git"
@@ -59,15 +60,18 @@ var catalogueGenerateCommand = &cli.Command{
 
 		logrus.Debugf("ensuring '%v' recipe(s) are locally present and up-to-date", len(repos))
 
+		bar := formatter.CreateProgressbar(len(repos), "retrieving recipes...")
 		ch := make(chan string, len(repos))
 		for _, repoMeta := range repos {
 			go func(rm catalogue.RepoMeta) {
 				if recipeName != "" && recipeName != rm.Name {
 					ch <- rm.Name
+					bar.Add(1)
 					return
 				}
 				if _, exists := CatalogueSkipList[rm.Name]; exists {
 					ch <- rm.Name
+					bar.Add(1)
 					return
 				}
 
@@ -82,6 +86,7 @@ var catalogueGenerateCommand = &cli.Command{
 				}
 
 				ch <- rm.Name
+				bar.Add(1)
 			}(repoMeta)
 		}