Creates new token types for the DRM reprovisioning scheme that will be
used by L3 CDMs with baked-in certificates to allow for use of unique
serial numbers.
- Create new `CdmClientTokenType` for DRM reprovisioning in the CDM
core.
- Create a new `ProvisioningType` for DRM reprovisioning in the
provisioning message proto.
- Create new enum value for `DEVICE_EMBEDDED` in DrmCertificate type.
- Update uses of the above to include the new token types.
Bug: b/305093063
Merged from https://widevine-internal-review.googlesource.com/186934
Change-Id: I7e6cc8744b80cbbb624d31e5be1eab1be8a9680f