Added DB folder and imported bigquery libraries in POM file

.idea/codeStyles/codeStyleConfig.xml

.idea/encodings.xml

...Maven__com_fasterxml_jackson_core_jackson_core_2_13_1.xml

...braries/Maven__com_google_android_annotations_4_1_1_4.xml

...Maven__com_google_api_client_google_api_client_1_33_1.xml

.idea/libraries/Maven__com_google_api_gax_grpc_2_11_0.xml

...a/libraries/Maven__com_google_api_gax_httpjson_0_96_0.xml

..._grpc_proto_google_cloud_bigqueryconnection_v1_2_1_10.xml

..._proto_google_cloud_bigqueryconnection_v1beta1_0_9_10.xml

...is_google_api_services_bigquery_v2_rev20220123_1_32_1.xml

...ven__com_google_auto_value_auto_value_annotations_1_9.xml

...s/Maven__com_google_cloud_google_cloud_bigquery_2_8_0.xml

...aries/Maven__com_google_cloud_google_cloud_core_2_4_0.xml

.../Maven__com_google_cloud_google_cloud_core_http_2_4_0.xml

...oogle_http_client_google_http_client_apache_v2_1_41_2.xml

...oogle_http_client_google_http_client_appengine_1_41_2.xml

...google_http_client_google_http_client_jackson2_1_41_2.xml

...n__com_google_oauth_client_google_oauth_client_1_33_0.xml

.idea/libraries/Maven__com_google_re2j_re2j_1_5.xml

.idea/libraries/Maven__io_grpc_grpc_alts_1_44_0.xml