[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/errors/headers.go

@@ -0,0 +1,103 @@
+// 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 errors
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+)
+
+// Validation represents a failure of a precondition
+type Validation struct {
+	code    int32
+	Name    string
+	In      string
+	Value   interface{}
+	message string
+	Values  []interface{}
+}
+
+func (e *Validation) Error() string {
+	return e.message
+}
+
+// Code the error code
+func (e *Validation) Code() int32 {
+	return e.code
+}
+
+// MarshalJSON implements the JSON encoding interface
+func (e Validation) MarshalJSON() ([]byte, error) {
+	return json.Marshal(map[string]interface{}{
+		"code":    e.code,
+		"message": e.message,
+		"in":      e.In,
+		"name":    e.Name,
+		"value":   e.Value,
+		"values":  e.Values,
+	})
+}
+
+// ValidateName sets the name for a validation or updates it for a nested property
+func (e *Validation) ValidateName(name string) *Validation {
+	if name != "" {
+		if e.Name == "" {
+			e.Name = name
+			e.message = name + e.message
+		} else {
+			e.Name = name + "." + e.Name
+			e.message = name + "." + e.message
+		}
+	}
+	return e
+}
+
+const (
+	contentTypeFail    = `unsupported media type %q, only %v are allowed`
+	responseFormatFail = `unsupported media type requested, only %v are available`
+)
+
+// InvalidContentType error for an invalid content type
+func InvalidContentType(value string, allowed []string) *Validation {
+	values := make([]interface{}, 0, len(allowed))
+	for _, v := range allowed {
+		values = append(values, v)
+	}
+	return &Validation{
+		code:    http.StatusUnsupportedMediaType,
+		Name:    "Content-Type",
+		In:      "header",
+		Value:   value,
+		Values:  values,
+		message: fmt.Sprintf(contentTypeFail, value, allowed),
+	}
+}
+
+// InvalidResponseFormat error for an unacceptable response format request
+func InvalidResponseFormat(value string, allowed []string) *Validation {
+	values := make([]interface{}, 0, len(allowed))
+	for _, v := range allowed {
+		values = append(values, v)
+	}
+	return &Validation{
+		code:    http.StatusNotAcceptable,
+		Name:    "Accept",
+		In:      "header",
+		Value:   value,
+		Values:  values,
+		message: fmt.Sprintf(responseFormatFail, allowed),
+	}
+}