[Bukkit] Port chunk section editing

And also drop all the old stuff that doesn't build any more and I'm
_not_ going back and fixing it

build-logic/src/main/kotlin/buildlogic.adapter.gradle.kts

@@ -1,3 +1,4 @@
+import buildlogic.getLibrary
 import buildlogic.stringyLibs
 import buildlogic.getVersion
 
@@ -25,6 +26,7 @@ repositories {
 
 dependencies {
     "implementation"(project(":worldedit-bukkit"))
+    "implementation"(stringyLibs.getLibrary("paperLib"))
     constraints {
         "remapper"("net.fabricmc:tiny-remapper:[${stringyLibs.getVersion("minimumTinyRemapper")},)") {
             because("Need remapper to support Java 21")

config/checkstyle/checkstyle.xml

@@ -184,7 +184,7 @@ Checks based on Google Checks, modified for EngineHub.
             <property name="allowThrowsTagsForSubclasses" value="true"/>
         </module>-->
         <module name="MethodName">
-            <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9_]*$"/>
+            <property name="format" value="^([a-z][a-z0-9][a-zA-Z0-9_]*|[xyz])$"/>
             <message key="name.invalidPattern"
                      value="Method name ''{0}'' must match pattern ''{1}''."/>
         </module>

settings.gradle.kts

@@ -71,7 +71,7 @@ includeBuild("build-logic")
 
 include("worldedit-libs")
 
-listOf("1.20.2", "1.20.4", "1.20.6", "1.21").forEach {
+listOf("1.21").forEach {
     include("worldedit-bukkit:adapters:adapter-$it")
 }