add api/v1/instance info handler + instance model (#18)

internal/gtsmodel/instance.go

@@ -0,0 +1,33 @@
+package gtsmodel
+
+import "time"
+
+// Instance represents a federated instance, either local or remote.
+type Instance struct {
+	// ID of this instance in the database
+	ID string `pg:"type:uuid,default:gen_random_uuid(),pk,notnull,unique"`
+	// Instance domain eg example.org
+	Domain string `pg:",notnull,unique"`
+	// Title of this instance as it would like to be displayed.
+	Title string
+	// base URI of this instance eg https://example.org
+	URI string `pg:",notnull,unique"`
+	// When was this instance created in the db?
+	CreatedAt time.Time `pg:"type:timestamp,notnull,default:now()"`
+	// When was this instance last updated in the db?
+	UpdatedAt   time.Time `pg:"type:timestamp,notnull,default:now()"`
+	// When was this instance suspended, if at all?
+	SuspendedAt time.Time
+	// ID of any existing domain block for this instance in the database
+	DomainBlockID string
+	// Short description of this instance
+	ShortDescription string
+	// Longer description of this instance
+	Description string
+	// Contact email address for this instance
+	ContactEmail string
+	// Contact account ID in the database for this instance
+	ContactAccountID string
+	// Reputation score of this instance
+	Reputation int64 `pg:",notnull,default:0"`
+}