feat: dict based Hyphenation (#305)

## Summary

* Adds (optional) Hyphenation for English, French, German, Russian
languages

## Additional Context

* Included hyphenation dictionaries add approximately 280kb to the flash
usage (German alone takes 200kb)
* Trie encoded dictionaries are adopted from hypher project
(https://github.com/typst/hypher)
* Soft hyphens (and other explicit hyphens) take precedence over
dict-based hyphenation. Overall, the hyphenation rules are quite
aggressive, as I believe it makes more sense on our smaller screen.

---------

Co-authored-by: Dave Allie <dave@daveallie.com>

lib/Epub/Epub/hyphenation/SerializedHyphenationTrie.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include <cstddef>
+#include <cstdint>
+
+// Lightweight descriptor that points at a serialized Liang hyphenation trie stored in flash.
+struct SerializedHyphenationPatterns {
+  const std::uint8_t* data;
+  size_t size;
+};