[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/strfmt/README.md

@@ -0,0 +1,88 @@
+# Strfmt [![Build Status](https://travis-ci.org/go-openapi/strfmt.svg?branch=master)](https://travis-ci.org/go-openapi/strfmt) [![codecov](https://codecov.io/gh/go-openapi/strfmt/branch/master/graph/badge.svg)](https://codecov.io/gh/go-openapi/strfmt) [![Slack Status](https://slackin.goswagger.io/badge.svg)](https://slackin.goswagger.io)
+
+[![license](http://img.shields.io/badge/license-Apache%20v2-orange.svg)](https://raw.githubusercontent.com/go-openapi/strfmt/master/LICENSE)
+[![GoDoc](https://godoc.org/github.com/go-openapi/strfmt?status.svg)](http://godoc.org/github.com/go-openapi/strfmt)
+[![GolangCI](https://golangci.com/badges/github.com/go-openapi/strfmt.svg)](https://golangci.com)
+[![Go Report Card](https://goreportcard.com/badge/github.com/go-openapi/strfmt)](https://goreportcard.com/report/github.com/go-openapi/strfmt)
+
+This package exposes a registry of data types to support string formats in the go-openapi toolkit.
+
+strfmt represents a well known string format such as credit card or email. The go toolkit for OpenAPI specifications knows how to deal with those.
+
+## Supported data formats
+go-openapi/strfmt follows the swagger 2.0 specification with the following formats
+defined [here](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md#data-types).
+
+It also provides convenient extensions to go-openapi users.
+
+- [x] JSON-schema draft 4 formats
+  - date-time
+  - email
+  - hostname
+  - ipv4
+  - ipv6
+  - uri
+- [x] swagger 2.0 format extensions
+  - binary
+  - byte (e.g. base64 encoded string)
+  - date (e.g. "1970-01-01")
+  - password
+- [x] go-openapi custom format extensions
+  - bsonobjectid (BSON objectID)
+  - creditcard
+  - duration (e.g. "3 weeks", "1ms")
+  - hexcolor (e.g. "#FFFFFF")
+  - isbn, isbn10, isbn13
+  - mac (e.g "01:02:03:04:05:06")
+  - rgbcolor (e.g. "rgb(100,100,100)")
+  - ssn
+  - uuid, uuid3, uuid4, uuid5
+  - cidr (e.g. "192.0.2.1/24", "2001:db8:a0b:12f0::1/32")
+  - ulid (e.g. "00000PP9HGSBSSDZ1JTEXBJ0PW", [spec](https://github.com/ulid/spec))
+
+> NOTE: as the name stands for, this package is intended to support string formatting only.
+> It does not provide validation for numerical values with swagger format extension for JSON types "number" or
+> "integer" (e.g. float, double, int32...).
+
+## Type conversion
+
+All types defined here are stringers and may be converted to strings with `.String()`.
+Note that most types defined by this package may be converted directly to string like `string(Email{})`.
+
+`Date` and `DateTime` may be converted directly to `time.Time` like `time.Time(Time{})`.
+Similarly, you can convert `Duration` to `time.Duration` as in `time.Duration(Duration{})`
+
+## Using pointers
+
+The `conv` subpackage provides helpers to convert the types to and from pointers, just like `go-openapi/swag` does
+with primitive types.
+
+## Format types
+Types defined in strfmt expose marshaling and validation capabilities.
+
+List of defined types:
+- Base64
+- CreditCard
+- Date
+- DateTime
+- Duration
+- Email
+- HexColor
+- Hostname
+- IPv4
+- IPv6
+- CIDR
+- ISBN
+- ISBN10
+- ISBN13
+- MAC
+- ObjectId
+- Password
+- RGBColor
+- SSN
+- URI
+- UUID
+- UUID3
+- UUID4
+- UUID5
+- [ULID](https://github.com/ulid/spec)