Add Fertile Soil support + Herb sack support

[Ketsh11]

Summary

Adds Fertile Soil support as a compost option for farming runs, including the Ash covered tome upgrade for ultracompost.

Changes

• Added Fertile Soil and FS + Tome compost options
• Added rune and volcanic ash requirements for Fertile Soil casts
• Added Fertile Soil spell highlighting
• Added Spellbook Swap support for standard spellbook teleports while using Fertile Soil
• Added an indicator when Fertile Soil is selected but the player is not on the Lunar spellbook
• Skips Fertile Soil for Troll Stronghold herb patch, where protection is handled by Drunken Dwarf's Leg
• Added an optional herb sack requirement for herb runs
• Improved handling for patches that are already growing so the run can continue to the next farmable patch

Testing

• Ran Gradle tests successfully
• Tested in-game across herb run flow, Fertile Soil casting, Spellbook Swap / Teleport to House flow, and growing patch behavior

Notes

Opening as WIP while I continue validating edge cases in-game.
UPDATE: Done a couple of runs, everything appears to be working as intended, not running into anything weird.