Add MySQL SSL options for hyperdrive creation (#11656)

Author: prydt

.changeset/silver-coins-take.md

@@ -0,0 +1,17 @@
+---
+"wrangler": minor
+---
+
+feat(hyperdrive): add MySQL SSL mode and Custom CA support
+
+Hyperdrive now supports MySQL-specific SSL modes (`REQUIRED`, `VERIFY_CA`, `VERIFY_IDENTITY`) alongside the existing PostgreSQL modes. The `--sslmode` flag now validates the provided value based on the database scheme (PostgreSQL or MySQL) and enforces appropriate CA certificate requirements for each.
+
+**Usage:**
+
+```sh
+# MySQL with CA verification
+wrangler hyperdrive create my-config --connection-string="mysql://user:pass@host:3306/db" --sslmode=VERIFY_CA --ca-certificate-id=<cert-id>
+
+# PostgreSQL (unchanged)
+wrangler hyperdrive create my-config --connection-string="postgres://user:pass@host:5432/db" --sslmode=verify-full --ca-certificate-id=<cert-id>
+```