Add queryable store with SQLite implementation

This adds the new "queryable store" API, that allows complex
queries and is backed by SQLite. This new API can be used
for entities annotated with the new QueryableType annotation.

scm-annotation-processor/build.gradle

@@ -41,7 +41,24 @@ dependencies {
   // utils
   implementation libraries.guava
 
+  implementation "com.google.auto:auto-common:1.2.2"
+
+  implementation 'com.squareup:javapoet:1.13.0'
+
+  testImplementation "com.google.testing.compile:compile-testing:0.21.0"
+  testImplementation libraries.junitJupiterApi
+  testImplementation libraries.junitJupiterEngine
+  testImplementation libraries.assertj
+
   // service registration
   compileOnly libraries.metainfServices
   annotationProcessor libraries.metainfServices
+
+}
+
+test {
+  // See: https://github.com/google/compile-testing/issues/222
+  jvmArgs("--add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED")
+  jvmArgs("--add-exports=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED")
+  jvmArgs("--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED")
 }