puzzles: resync with upstream

This brings the puzzles source in sync with Simon's branch, commit fd304c5
(from March 2024), with some added Rockbox-specific compatibility changes:

https://www.franklinwei.com/git/puzzles/commit/?h=rockbox-devel&id=516830d9d76bdfe64fe5ccf2a9b59c33f5c7c078

There are quite a lot of backend changes, including a new "Mosaic" puzzle.
In addition, some new frontend changes were necessary:

- New "Preferences" menu to access the user preferences system.
- Enabled spacebar input for several games.

Change-Id: I94c7df674089c92f32d5f07025f6a1059068af1e

apps/plugins/puzzles/SOURCES

@@ -17,6 +17,7 @@ src/matching.c
 src/midend.c
 src/misc.c
 src/penrose.c
+src/penrose-legacy.c
 src/printing.c
 src/random.c
 src/sort.c
@@ -24,6 +25,9 @@ src/tdq.c
 src/tree234.c
 src/version.c
 
+src/hat.c
+src/spectre.c
+
 #ifdef COMBINED
 src/list.c
 #endif