tests: add delta lake test

tests/spark/README.md

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+This application was used to produce the `delta-table` for the delta kuttl test.
+
+It cannot be placed in the delta test folder because beku tries to recurse into it and fails.
+
+To run it, you need a S3 (minio) available. Update the variables below as needed:
+
+    S3_ENDPOINT=https://localhost:9000 \
+    S3_ACCESS_KEY=minioAccessKey \
+    S3_SECRET_KEY=minioSecretKey \
+    S3_SKIP_TLS_VALIDATION=true \
+    DELTA_TABLE_PATH=s3a://trino/delta-table \
+    ./gradlew run

tests/spark/build.gradle

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+plugins {
+    id 'java'
+    id 'application'
+}
+
+group = 'org.example'
+version = '1.0-SNAPSHOT'
+
+application {
+    mainClass = 'org.example.Main'
+    applicationDefaultJvmArgs = [
+            '--add-opens=java.base/sun.nio.ch=ALL-UNNAMED'
+    ]
+}
+
+repositories {
+    mavenCentral()
+}
+
+
+dependencies {
+
+    // Source: https://mvnrepository.com/artifact/org.apache.spark/spark-sql
+    implementation 'org.apache.spark:spark-sql_2.12:3.5.5'
+    // Source: https://mvnrepository.com/artifact/io.delta/delta-spark
+    implementation 'io.delta:delta-spark_2.12:3.3.2'
+    // Source: https://mvnrepository.com/artifact/org.apache.hadoop/hadoop-aws
+    implementation 'org.apache.hadoop:hadoop-aws:3.3.4'
+    // Source: https://mvnrepository.com/artifact/com.amazonaws/aws-java-sdk-bundle
+    implementation 'com.amazonaws:aws-java-sdk-bundle:1.12.262'
+
+    testImplementation platform('org.junit:junit-bom:5.10.0')
+    testImplementation 'org.junit.jupiter:junit-jupiter'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+}
+
+test {
+    useJUnitPlatform()
+}

tests/spark/gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.1-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists