[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/loads/options.go

@@ -0,0 +1,61 @@
+package loads
+
+type options struct {
+	loader *loader
+}
+
+func defaultOptions() *options {
+	return &options{
+		loader: loaders,
+	}
+}
+
+func loaderFromOptions(options []LoaderOption) *loader {
+	opts := defaultOptions()
+	for _, apply := range options {
+		apply(opts)
+	}
+
+	return opts.loader
+}
+
+// LoaderOption allows to fine-tune the spec loader behavior
+type LoaderOption func(*options)
+
+// WithDocLoader sets a custom loader for loading specs
+func WithDocLoader(l DocLoader) LoaderOption {
+	return func(opt *options) {
+		if l == nil {
+			return
+		}
+		opt.loader = &loader{
+			DocLoaderWithMatch: DocLoaderWithMatch{
+				Fn: l,
+			},
+		}
+	}
+}
+
+// WithDocLoaderMatches sets a chain of custom loaders for loading specs
+// for different extension matches.
+//
+// Loaders are executed in the order of provided DocLoaderWithMatch'es.
+func WithDocLoaderMatches(l ...DocLoaderWithMatch) LoaderOption {
+	return func(opt *options) {
+		var final, prev *loader
+		for _, ldr := range l {
+			if ldr.Fn == nil {
+				continue
+			}
+
+			if prev == nil {
+				final = &loader{DocLoaderWithMatch: ldr}
+				prev = final
+				continue
+			}
+
+			prev = prev.WithNext(&loader{DocLoaderWithMatch: ldr})
+		}
+		opt.loader = final
+	}
+}