Fenix baseline_daily and clients_last_seen tables

[jklukas]

As announced in:

https://mail.mozilla.org/pipermail/fx-data-dev/2020-April/000339.html

[jklukas]

Once merged, I'll run the following to delete:

bq rm -f moz-fx-data-shared-prod:org_mozilla_fenix.clients_last_seen
bq rm -f moz-fx-data-shared-prod:org_mozilla_firefox.baseline_daily
bq rm -f moz-fx-data-shared-prod:org_mozilla_firefox.clients_last_seen
bq rm -f moz-fx-data-shared-prod:org_mozilla_firefox.metrics_daily
bq rm -f moz-fx-data-derived-datasets:org_mozilla_fenix.clients_last_seen
bq rm -f moz-fx-data-derived-datasets:org_mozilla_firefox.baseline_daily
bq rm -f moz-fx-data-derived-datasets:org_mozilla_firefox.clients_last_seen
bq rm -f moz-fx-data-derived-datasets:org_mozilla_firefox.metrics_daily

bq rm -f moz-fx-data-shared-prod:org_mozilla_fenix_derived.clients_daily_v1
bq rm -f moz-fx-data-shared-prod:org_mozilla_fenix_derived.clients_last_seen_v1
bq rm -f moz-fx-data-shared-prod:org_mozilla_firefox_derived.baseline_daily_v1
bq rm -f moz-fx-data-shared-prod:org_mozilla_firefox_derived.clients_first_seen_v1
bq rm -f moz-fx-data-shared-prod:org_mozilla_firefox_derived.clients_last_seen_v1
bq rm -f moz-fx-data-shared-prod:org_mozilla_firefox_derived.metrics_daily_v1