Api/v1/statuses (#11)

This PR adds:
Statuses

    New status creation.
    View existing status
    Delete a status
    Fave a status
    Unfave a status
    See who's faved a status

Media

    Upload media attachment and store/retrieve it
    Upload custom emoji and store/retrieve it

Fileserver

    Serve files from storage

Testing

    Test models, testrig -- run a GTS test instance and play around with it.

internal/config/media.go

@@ -24,4 +24,8 @@ type MediaConfig struct {
 	MaxImageSize int `yaml:"maxImageSize"`
 	// Max size of uploaded video in bytes
 	MaxVideoSize int `yaml:"maxVideoSize"`
+	// Minimum amount of chars required in an image description
+	MinDescriptionChars int `yaml:"minDescriptionChars"`
+	// Max amount of chars allowed in an image description
+	MaxDescriptionChars int `yaml:"maxDescriptionChars"`
 }