doctl-databases-*: add page (#10882)

* doctl-databases-*: add page

---------

Co-authored-by: Reinhart Previano Koentjoro <reinhart_previano@yahoo.com>
Co-authored-by: Juri Dispan <juri.dispan@posteo.net>
Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

pages/common/doctl-databases-sql-mode.md

@@ -0,0 +1,16 @@
+# doctl databases sql-mode
+
+> View and configure a MySQL database cluster’s global SQL modes.
+> More information: <https://docs.digitalocean.com/reference/doctl/reference/databases/sql-mode/>.
+
+- Run a `doctl databases sql-mode` command with an access token:
+
+`doctl databases sql-mode {{command}} --access-token {{access_token}}`
+
+- Get a MySQL database cluster's SQL modes:
+
+`doctl databases sql-mode get {{database_id}}`
+
+- Overwrite a MySQL database cluster's SQL modes to the specified modes:
+
+`doctl databases sql-mode set {{database_id}} {{sql_mode_1 sql_mode_2 ...}}`