feat: add unified test suite CI job

.github/workflows/unified-test-suite.yml

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+name: Unified Test Suite
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  unified-test-suite:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Java 17
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '17'
+
+      - name: Set up Node.js 18
+        uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+
+      - name: Build Adapter
+        working-directory: adapter
+        run: |
+          ./gradlew build
+          JAR_PATH=$(find $(pwd) -name '*standalone.jar' | head -n 1)
+          echo "JAR_PATH=$JAR_PATH" >> $GITHUB_ENV
+
+      - name: Install uts-pubsub globally
+        run: npm install -g @ably-labs/uts-pubsub
+
+      - name: Run uts-pubsub with ADAPTER_EXECUTABLE
+        env:
+          ADAPTER_EXECUTABLE: java -jar ${{ env.JAR_PATH }}
+        run: uts-pubsub

adapter/build.gradle.kts

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+val ktor_version: String by project
+val kotlin_version: String by project
+val logback_version: String by project
+
+plugins {
+    kotlin("jvm") version "1.9.22"
+    id("io.ktor.plugin") version "2.3.7"
+}
+
+group = "com.ably.java"
+version = "0.0.1"
+
+application {
+    mainClass.set("com.ably.java.ApplicationKt")
+}
+
+tasks {
+  val fatJar = register<Jar>("fatJar") {
+    dependsOn.addAll(listOf("compileJava", "compileKotlin", "processResources")) // We need this for Gradle optimization to work
+    archiveClassifier.set("standalone") // Naming the jar
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+    manifest { attributes(mapOf("Main-Class" to application.mainClass)) } // Provided we set it up in the application plugin configuration
+    val sourcesMain = sourceSets.main.get()
+    val contents = configurations.runtimeClasspath.get()
+      .map { if (it.isDirectory) it else zipTree(it) } +
+      sourcesMain.output
+    from(contents)
+  }
+  build {
+    dependsOn(fatJar)
+  }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation("io.ably:ably-java:1.2.38")
+    implementation("com.benasher44:uuid:0.8.2")
+    implementation("io.ktor:ktor-client-core")
+    implementation("io.ktor:ktor-client-cio")
+    implementation("io.ktor:ktor-client-logging")
+    implementation("io.ktor:ktor-client-websockets")
+    implementation("io.ktor:ktor-serialization-kotlinx-json")
+    implementation("io.ktor:ktor-client-content-negotiation")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.4")
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-core:1.5.1")
+    implementation("com.google.code.gson:gson:2.9.0")
+    implementation("ch.qos.logback:logback-classic:$logback_version")
+}

adapter/gradle.properties

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+ktor_version=2.3.7
+kotlin_version=1.9.22
+logback_version=1.4.11
+kotlin.code.style=official

adapter/gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists