Simple trie implementation

This is an unoptimized not-production-ready trie implementation without path compression. Just a fun project.

Example

```rs use mytrie::Trie;

let trie = Trie::from(["Hallo", "Hallöchen", "Tschüs"]); let mut content: Vec = trie.iter_content("Hall").collect();

content.sort(); assert_eq!(content, ["Hallo", "Hallöchen"]); ```