chore: add initial publishing code for java

.github/workflows/trigger-java-publish.yml

@@ -0,0 +1,63 @@
+name: Test Publish Dummy Package to GitHub Packages
+
+on:
+  workflow_dispatch:
+
+jobs:
+  publish-dummy:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up JDK 17
+      uses: actions/setup-java@v4
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+
+    - name: Setup Gradle
+      uses: gradle/actions/setup-gradle@v3
+
+    - name: Create dummy project
+      run: |
+        mkdir -p src/main/java/org/peerdas/kzg
+        echo "package org.peerdas.kzg; public class DummyClass { public static void main(String[] args) { System.out.println(\"Hello from PeerDAS KZG DummyClass\"); } }" > src/main/java/org/peerdas/kzg/DummyClass.java
+
+        echo "plugins {
+          id 'java'
+          id 'maven-publish'
+        }
+
+        group = 'org.peerdas.kzg'
+        version = '0.0.1-SNAPSHOT'
+
+        repositories {
+          mavenCentral()
+        }
+
+        publishing {
+          repositories {
+            maven {
+              name = \"GitHubPackages\"
+              url = uri(\"https://maven.pkg.github.com/crate-crypto/peerdas-kzg\")
+              credentials {
+                username = System.getenv(\"GITHUB_ACTOR\")
+                password = System.getenv(\"GITHUB_TOKEN\")
+              }
+            }
+          }
+          publications {
+            gpr(MavenPublication) {
+              from(components.java)
+            }
+          }
+        }" > build.gradle
+
+    - name: Publish dummy package
+      run: ./gradlew publish
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

bindings/java/java_code/build.gradle

@@ -3,6 +3,7 @@ plugins {
     id "java-test-fixtures"
     id "me.champeau.jmh" version "0.7.0"
     id "com.diffplug.spotless" version "6.17.0"
+    id 'maven-publish'
 }
 
 group = 'ethereum.cryptography'
@@ -30,6 +31,27 @@ dependencies {
     testFixturesImplementation("com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:${jacksonVersion}")
 }
 
+// TODO: Re-evaluate whether we should keep this
 test {
     useJUnitPlatform()
+    dependsOn cleanTest
+    testLogging.showStandardStreams = true
+}
+
+publishing {
+    repositories {
+        maven {
+            name = "GitHubPackages"
+            url = uri("https://maven.pkg.github.com/crate-crypto/peerdas-kzg")
+            credentials {
+                username = System.getenv("GITHUB_GRADLE_USERNAME")
+                password = System.getenv("GITHUB_GRADLE_PASSWORD")
+            }
+        }
+    }
+    publications {
+        gpr(MavenPublication) {
+            from(components.java)
+        }
+    }
 }