feature: Add CoreRulebooksAndSupplements collection

- Extracted Rules Supplements from Adventures
-- Renamed RulesSupplementsAndAdventures to Adventures
- Moved Mechanical Servants to its own UA Artificer source
- Updated collections with new sources
- Fixed redundant monster type in Tome of Beasts
- Updated Readme and Changelog

Collections/CoreRulebooksAndSupplements.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<collection>
+    <!-- Core Rulebooks -->
+    <doc href="../FightClub5eXML/Sources/CoreRulebooks.xml" />
+    
+    <!-- Supplements -->
+    <doc href="../FightClub5eXML/Sources/XanatharsGuideToEverything.xml" />
+    <doc href="../FightClub5eXML/Sources/MordenkainensTomeOfFoes.xml" />
+    <doc href="../FightClub5eXML/Sources/VolosGuideToMonsters.xml" />
+    <doc href="../FightClub5eXML/Sources/SwordCoastAdventurersGuide.xml" />
+    <doc href="../FightClub5eXML/Sources/GuildmastersGuideToRavnica.xml" />
+    <doc href="../FightClub5eXML/Sources/WayfindersGuideToEberron.xml" />
+    <doc href="../FightClub5eXML/Sources/EberronRisingFromTheLastWar.xml" />
+    <doc href="../FightClub5eXML/Sources/AcquisitionsIncorporated.xml" />
+    <doc href="../FightClub5eXML/Sources/MordenkainensFiendishFolio.xml" />
+    <doc href="../FightClub5eXML/Sources/TheTortlePackage.xml" />
+    <doc href="../FightClub5eXML/Sources/OneGrungAbove.xml" />
+</collection>