feat: add :pause subcommand and make :stop subcommand actually remove the container

tests/service_pause.bats

@@ -0,0 +1,25 @@
+#!/usr/bin/env bats
+load test_helper
+
+setup() {
+  dokku "$PLUGIN_COMMAND_PREFIX:create" l
+}
+
+teardown() {
+  dokku --force "$PLUGIN_COMMAND_PREFIX:destroy" l
+}
+
+@test "($PLUGIN_COMMAND_PREFIX:pause) error when there are no arguments" {
+  run dokku "$PLUGIN_COMMAND_PREFIX:pause"
+  assert_contains "${lines[*]}" "Please specify a valid name for the service"
+}
+
+@test "($PLUGIN_COMMAND_PREFIX:pause) error when service does not exist" {
+  run dokku "$PLUGIN_COMMAND_PREFIX:pause" not_existing_service
+  assert_contains "${lines[*]}" "service not_existing_service does not exist"
+}
+
+@test "($PLUGIN_COMMAND_PREFIX:pause) success" {
+  run dokku "$PLUGIN_COMMAND_PREFIX:pause" l
+  assert_success
+}