Added character list in search

src/models/Characters.ts

@@ -0,0 +1,12 @@
+import type { LeimDate } from './Date'
+
+export interface Character {
+  name: string
+  description?: string
+  birth?: LeimDate
+  death?: LeimDate
+}
+
+export function isCharacter(object: any): object is Character {
+  return 'birth' in object
+}