[bugfix] Fix Swagger spec and add test script (#2698)

* Add Swagger spec test script

* Fix Swagger spec errors not related to statuses with polls

* Add API tests that post a status with a poll

* Fix creating a status with a poll from form params

* Fix Swagger spec errors related to statuses with polls (this is the last error)

* Fix Swagger spec warnings not related to unused definitions

* Suppress a duplicate list update params definition that was somehow causing wrong param names

* Add Swagger test to CI

- updates Drone config
- vendorizes go-swagger
- fixes a file extension issue that caused the test script to generate JSON instead of YAML with the vendorized version

* Put `Sample: ` on its own line everywhere

* Remove unused id param from emojiCategoriesGet

* Add 5 more pairs of profile fields to account update API Swagger

* Remove Swagger prefix from dummy fields

It makes the generated code look weird

* Manually annotate params for statusCreate operation

* Fix all remaining Swagger spec warnings

- Change some models into operation parameters
- Ignore models that already correspond to manually documented operation parameters but can't be trivially changed (those with file fields)

* Documented that creating a status with scheduled_at isn't implemented yet

* sign drone.yml

* Fix filter API Swagger errors

* fixup! Fix filter API Swagger errors

---------

Co-authored-by: tobi <tobi.smethurst@protonmail.com>

vendor/github.com/go-openapi/spec/license.go

@@ -0,0 +1,56 @@
+// Copyright 2015 go-swagger maintainers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package spec
+
+import (
+	"encoding/json"
+
+	"github.com/go-openapi/swag"
+)
+
+// License information for the exposed API.
+//
+// For more information: http://goo.gl/8us55a#licenseObject
+type License struct {
+	LicenseProps
+	VendorExtensible
+}
+
+// LicenseProps holds the properties of a License object
+type LicenseProps struct {
+	Name string `json:"name,omitempty"`
+	URL  string `json:"url,omitempty"`
+}
+
+// UnmarshalJSON hydrates License from json
+func (l *License) UnmarshalJSON(data []byte) error {
+	if err := json.Unmarshal(data, &l.LicenseProps); err != nil {
+		return err
+	}
+	return json.Unmarshal(data, &l.VendorExtensible)
+}
+
+// MarshalJSON produces License as json
+func (l License) MarshalJSON() ([]byte, error) {
+	b1, err := json.Marshal(l.LicenseProps)
+	if err != nil {
+		return nil, err
+	}
+	b2, err := json.Marshal(l.VendorExtensible)
+	if err != nil {
+		return nil, err
+	}
+	return swag.ConcatJSON(b1, b2), nil
+}