Added initial files

src/main/kotlin/service/LibraryService.kt

@@ -0,0 +1,26 @@
+package codes.kalar.service
+
+import codes.kalar.exception.DbElementInsertionException
+import codes.kalar.exception.DbElementNotFoundException
+import kotlinx.serialization.json.Json
+import java.sql.*
+
+class LibraryService(private val connection: Connection) {
+
+    companion object {
+        private const val SELECT_LIBRARY_BY_ID = ""
+        private const val INSERT_LIBRARY = ""
+        private const val UPDATE_LIBRARY_BY_ID = ""
+        // In the event  are "deleted" erroneously, having a flag set instead of actually removing the entry allows
+        // for quick reversal.
+        private const val ARCHIVE_LIBRARY_BY_ID = ""
+    }
+
+    suspend fun create() {}
+
+    suspend fun read() {}
+
+    suspend fun update() {}
+
+    suspend fun delete() {}
+}