Create new token types for DRM reprovisioning

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

libwvdrmengine/cdm/core/include/wv_cdm_types.h

@@ -606,6 +606,7 @@ enum CdmClientTokenType : int32_t {
   kClientTokenOemCert,
   kClientTokenUninitialized,
   kClientTokenBootCertChain,
+  kClientTokenDrmReprovisioning,
 };
 
 // kNonSecureUsageSupport - TEE does not provide any support for usage