[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/.golangci.yml

@@ -0,0 +1,59 @@
+linters-settings:
+  govet:
+    check-shadowing: true
+  golint:
+    min-confidence: 0
+  gocyclo:
+    min-complexity: 31
+  maligned:
+    suggest-new: true
+  dupl:
+    threshold: 100
+  goconst:
+    min-len: 2
+    min-occurrences: 4
+
+linters:
+  enable:
+    - revive
+    - goimports
+    - gosec
+    - unparam
+    - unconvert
+    - predeclared
+    - prealloc
+    - misspell
+
+  # disable:
+  #   - maligned
+  #   - lll
+  #   - gochecknoinits
+  #   - gochecknoglobals
+  #   - godox
+  #   - gocognit
+  #   - whitespace
+  #   - wsl
+  #   - funlen
+  #   - wrapcheck
+  #   - testpackage
+  #   - nlreturn
+  #   - gofumpt
+  #   - goerr113
+  #   - gci
+  #   - gomnd
+  #   - godot
+  #   - exhaustivestruct
+  #   - paralleltest
+  #   - varnamelen
+  #   - ireturn
+  #   - exhaustruct
+  #   #- thelper
+
+issues:
+  exclude-rules:
+    - path: bson.go
+      text: "should be .*ObjectID"
+      linters:
+        - golint
+        - stylecheck
+