feat: Add per-family font and per-language hyphenation build flags

Add OMIT_BOOKERLY, OMIT_NOTOSANS, OMIT_OPENDYSLEXIC flags to
selectively exclude font families, and OMIT_HYPH_DE/EN/ES/FR/IT/RU
flags to exclude individual hyphenation language tries.

The mod build environment excludes OpenDyslexic (~1.03 MB) and all
hyphenation tries (~282 KB), reducing flash usage by ~1.3 MB.

Font Family setting switched from Enum to DynamicEnum with
index-to-value mapping to handle arbitrary font exclusion without
breaking the settings UI or persisted values.

Co-authored-by: Cursor <cursoragent@cursor.com>

platformio.ini

@@ -65,6 +65,12 @@ extra_scripts =
   pre:scripts/inject_mod_version.py
 build_flags =
   ${base.build_flags}
+  -DOMIT_OPENDYSLEXIC
+  -DOMIT_HYPH_DE
+  -DOMIT_HYPH_ES
+  -DOMIT_HYPH_FR
+  -DOMIT_HYPH_IT
+  -DOMIT_HYPH_RU
   -DENABLE_SERIAL_LOG
   -DLOG_LEVEL=2 ; Set log level to debug for mod builds