refactor: break up cli pkg into nice small chunks

cli/app/remove.go

@@ -0,0 +1,11 @@
+package app
+
+import (
+	"coopcloud.tech/abra/cli/internal"
+	"github.com/urfave/cli/v2"
+)
+
+var appRemoveCommand = &cli.Command{
+	Name:  "remove",
+	Flags: []cli.Flag{internal.VolumesFlag, internal.SecretsFlag},
+}