feat: fetch all recipes when no recipe is specified (!401)

Closes coop-cloud/organising#530

Reviewed-on: coop-cloud/abra#401
Reviewed-by: decentral1se <decentral1se@noreply.git.coopcloud.tech>
Co-authored-by: p4u1 <p4u1_f4u1@riseup.net>
Co-committed-by: p4u1 <p4u1_f4u1@riseup.net>

tests/integration/recipe_fetch.bats

@@ -5,7 +5,17 @@ setup() {
   _common_setup
 }
 
-@test "recipe fetch" {
+@test "recipe fetch all" {
+  run rm -rf "$ABRA_DIR/recipes/matrix-synapse"
+  assert_success
+  assert_not_exists "$ABRA_DIR/recipes/matrix-synapse"
+
+  run $ABRA recipe fetch
+  assert_success
+  assert_exists "$ABRA_DIR/recipes/matrix-synapse"
+}
+
+@test "recipe fetch single recipe" {
   run rm -rf "$ABRA_DIR/recipes/matrix-synapse"
   assert_success
   assert_not_exists "$ABRA_DIR/recipes/matrix-synapse"