feat(common): Use java-ecosystem-capabilities for extra metadata

This replaces the missing-metadata-guava plugin, which is now deprecated.

Fixes GH-119

Author: zml2008

gradle/libs.versions.toml

@@ -29,8 +29,8 @@ mammoth = { module = "net.kyori:mammoth", version.ref = "mammoth" }
 
 asm = { module = "org.ow2.asm:asm", version.ref = "asm" }
 cadixLicenser = "gradle.plugin.org.cadixdev.gradle:licenser:0.6.1"
-# https://github.com/jjohannes/missing-metadata-guava
-missingMetadataGuava = "de.jjohannes.gradle:missing-metadata-guava:31.1.1"
+# https://github.com/gradlex-org/java-ecosystem-capabilities
+javaEcosystemCapabilities = { module = "org.gradlex:java-ecosystem-capabilities", version = "1.1" }
 kotlinPlugin = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin", version.ref = "kotlin" }
 
 # git

indra-common/build.gradle

@@ -19,7 +19,7 @@ dependencies {
   compileOnlyApi libs.immutables.builder
   compileOnlyApi libs.jetbrainsAnnotations
   api project(":indra-git")
-  implementation libs.missingMetadataGuava
+  implementation libs.javaEcosystemCapabilities
   implementation libs.asm
   api libs.mammoth
   testImplementation project(":indra-testlib")

indra-common/src/main/java/net/kyori/indra/IndraPlugin.java

@@ -87,9 +87,9 @@ public class IndraPlugin implements ProjectPlugin {
   public void apply(final @NotNull Project project, final @NotNull PluginContainer plugins, final @NotNull ExtensionContainer extensions, final @NotNull TaskContainer tasks) {
     plugins.apply(JavaLibraryPlugin.class);
     if (GradleVersion.current().compareTo(GradleVersion.version("7.0")) >= 0) {
-      // Fix Guava references
+      // Fix a lot of JVM library artifact inconsistencies
       // Gradle <7.0 doesn't provide the necessary attributes for this to work effectively
-      plugins.apply("de.jjohannes.missing-metadata-guava");
+      plugins.apply("org.gradlex.java-ecosystem-capabilities");
     }
 
     final IndraExtensionImpl indra = (IndraExtensionImpl) Indra.extension(extensions);