Reorg modules; complete impls/tests

src/core/src/main/kotlin/DocumentIndex.kt

@@ -0,0 +1,13 @@
+package solutions.bitbadger.documents
+
+/**
+ * The type of index to generate for the document
+ */
+enum class DocumentIndex(val sql: String) {
+
+    /** A GIN index with standard operations (all operators supported) */
+    FULL(""),
+
+    /** A GIN index with JSONPath operations (optimized for @>, @?, @@ operators) */
+    OPTIMIZED(" jsonb_path_ops")
+}