Some fixes for 5.2 - #429

…reset

- Update FtRandoLib reference
- Make wasm output setting be local to browser project
- Adjust margins changed in Avalonia 12

Sending the pasted text through the textbox makes it only possible to
use the first line. I change it up to access the clipboard directly to
make it work when the flags and seeds are on separate lines.

- The code now uses js65 and is being reloc'd instead of inserted
  at a magic PRG0 address.
- HALF should now consistently trigger after 32 steps taken. (The high
  byte was previously not always reset).
- Make RANDOM be random encounter rate per continent (The Random
  option previously did nothing and was just the same as normal.)
- This will also make it possible to add other terrain to Maze Island
  without having MI encounters.

- Huge code cleanup
- Shuffle the directions in which Maze Island is expanded
- Position palace better inside grid

- Huge code cleanup
- Add a check when opening up VoD entrances to prevent creating illegal entrances to any trap tiles
- Add a check to stop rivers from opening up VoD center
- Add slightly more variance to where the trap tiles are placed along the VoD zig-zag path

- Remove sword immunities when Fire is replaced by Dash or linked with Fairy
- No sword immunities

- It doesn't do much differently from Random Walk in GP (just very slightly more vertical.)

- ReactiveUI.Validation dependency has been removed as it's not updated
- System.Reactive usages replaced by ReactiveUI.Primitives