Configure javadoc overview and doc-files copying

closes #7462

Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>

patches/api/0001-Convert-project-to-Gradle.patch

@@ -27,10 +27,10 @@ index e431e3435737e28394d81b56568a08b3c3148b9b..b23bde3b5e881f146539a307d0a59f21
 +/.factorypath
 diff --git a/build.gradle.kts b/build.gradle.kts
 new file mode 100644
-index 0000000000000000000000000000000000000000..bf1f5a8151ac0a4b25370142fef37145033140ef
+index 0000000000000000000000000000000000000000..d6b99d37c960a7d8de1852dbc74c3ce671101b14
 --- /dev/null
 +++ b/build.gradle.kts
-@@ -0,0 +1,66 @@
+@@ -0,0 +1,80 @@
 +plugins {
 +    `java-library`
 +    `maven-publish`
@@ -90,12 +90,26 @@ index 0000000000000000000000000000000000000000..bf1f5a8151ac0a4b25370142fef37145
 +}
 +
 +tasks.withType<Javadoc> {
-+    (options as StandardJavadocDocletOptions).links(
++    val options = options as StandardJavadocDocletOptions
++    options.overview = "src/main/javadoc/overview.html"
++    options.isDocFilesSubDirs = true
++    options.links(
 +        "https://guava.dev/releases/31.0.1-jre/api/docs/",
 +        "https://javadoc.io/doc/org.yaml/snakeyaml/1.30/",
 +        "https://javadoc.io/doc/org.jetbrains/annotations-java5/23.0.0/",
 +        "https://javadoc.io/doc/net.md-5/bungeecord-chat/1.16-R0.4/",
 +    )
++
++    // workaround for https://github.com/gradle/gradle/issues/4046
++    inputs.dir("src/main/javadoc").withPropertyName("javadoc-sourceset")
++    doLast {
++        copy {
++            from("src/main/javadoc") {
++                include("**/doc-files/**")
++            }
++            into("build/docs/javadoc")
++        }
++    }
 +}
 diff --git a/pom.xml b/pom.xml
 deleted file mode 100644

patches/api/0002-Build-system-changes.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Build system changes
 
 
 diff --git a/build.gradle.kts b/build.gradle.kts
-index bf1f5a8151ac0a4b25370142fef37145033140ef..709f9c3a562729970813f47b531bfc51ba192f55 100644
+index d6b99d37c960a7d8de1852dbc74c3ce671101b14..e49f4853e36f493754841231eeb5dd093b3788e0 100644
 --- a/build.gradle.kts
 +++ b/build.gradle.kts
 @@ -15,15 +15,27 @@ dependencies {
@@ -37,12 +37,12 @@ index bf1f5a8151ac0a4b25370142fef37145033140ef..709f9c3a562729970813f47b531bfc51
      testImplementation("junit:junit:4.13.2")
      testImplementation("org.hamcrest:hamcrest-library:1.3")
      testImplementation("org.ow2.asm:asm-tree:9.2")
-@@ -60,7 +72,7 @@ tasks.withType<Javadoc> {
-     (options as StandardJavadocDocletOptions).links(
+@@ -63,7 +75,7 @@ tasks.withType<Javadoc> {
+     options.links(
          "https://guava.dev/releases/31.0.1-jre/api/docs/",
          "https://javadoc.io/doc/org.yaml/snakeyaml/1.30/",
 -        "https://javadoc.io/doc/org.jetbrains/annotations-java5/23.0.0/",
 +        "https://javadoc.io/doc/org.jetbrains/annotations/23.0.0/", // Paper - we don't want Java 5 annotations
          "https://javadoc.io/doc/net.md-5/bungeecord-chat/1.16-R0.4/",
      )
- }
+ 

patches/api/0008-Adventure.patch

@@ -7,7 +7,7 @@ Co-authored-by: zml <zml@stellardrift.ca>
 Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
 
 diff --git a/build.gradle.kts b/build.gradle.kts
-index 55ee0c6330e4dbba22b4044346d1e1dd39c745ce..19b65a9b56b73f873ef646d14a6cf091b69d3873 100644
+index 98afa6a25131dc626ea7a5122f33df6bd2d39178..bacb5650f03827ac55f8c8c33f6ffda5b029a8a4 100644
 --- a/build.gradle.kts
 +++ b/build.gradle.kts
 @@ -8,6 +8,19 @@ java {
@@ -43,21 +43,7 @@ index 55ee0c6330e4dbba22b4044346d1e1dd39c745ce..19b65a9b56b73f873ef646d14a6cf091
      // Paper end
  
      compileOnly("org.apache.maven:maven-resolver-provider:3.8.4")
-@@ -70,10 +89,25 @@ tasks.jar {
- }
- 
- tasks.withType<Javadoc> {
-+    inputs.files(apiAndDocs)
-+        .ignoreEmptyDirectories()
-+        .withPropertyName(apiAndDocs.name + "-configuration")
-+    doFirst {
-+        (options as CoreJavadocOptions).addStringOption(
-+            "sourcepath",
-+            apiAndDocs.resolvedConfiguration.files.joinToString(separator = File.pathSeparator, transform = File::getPath)
-+        )
-+    }
-     (options as StandardJavadocDocletOptions).links(
-         "https://guava.dev/releases/31.0.1-jre/api/docs/",
+@@ -78,8 +97,22 @@ tasks.withType<Javadoc> {
          "https://javadoc.io/doc/org.yaml/snakeyaml/1.30/",
          "https://javadoc.io/doc/org.jetbrains/annotations/23.0.0/", // Paper - we don't want Java 5 annotations
          "https://javadoc.io/doc/net.md-5/bungeecord-chat/1.16-R0.4/",
@@ -68,7 +54,18 @@ index 55ee0c6330e4dbba22b4044346d1e1dd39c745ce..19b65a9b56b73f873ef646d14a6cf091
 +        "https://jd.adventure.kyori.net/text-serializer-plain/$adventureVersion/",
 +        // Paper end
      )
- }
+ 
++    inputs.files(apiAndDocs).ignoreEmptyDirectories().withPropertyName(apiAndDocs.name + "-configuration")
++    doFirst {
++        options.addStringOption(
++            "sourcepath",
++            apiAndDocs.resolvedConfiguration.files.joinToString(separator = File.pathSeparator, transform = File::getPath)
++        )
++    }
++
+     // workaround for https://github.com/gradle/gradle/issues/4046
+     inputs.dir("src/main/javadoc").withPropertyName("javadoc-sourceset")
+     doLast {
 diff --git a/src/main/java/co/aikar/timings/TimingsReportListener.java b/src/main/java/co/aikar/timings/TimingsReportListener.java
 index ef58a6c00f444bd498a2d8fc4e457236f393954f..ecd149157d4fb80444f34bf5633d74bcdb63dec5 100644
 --- a/src/main/java/co/aikar/timings/TimingsReportListener.java