add new models, change migration files, prepare to add all new tables from models

internal/foundry/temp_models/db/authors.go

@@ -0,0 +1,11 @@
+package db
+
+type Author struct {
+	ID uint
+
+	Name    string
+	URL     string
+	Email   string
+	Discord string
+	// SystemAuthorsFlags SystemAuthorsFlags `json:"flags"`
+}