Generate overloads that take both Flux<ByteBuffer> and BinaryData.

[kasobol-msft]

The HttpRequest in the core can now take BinaryData as body and not translate it to Flux at all.
See Azure/azure-sdk-for-java#26784 and linked PRs.

In order to for HLC to leverage this we need to start generating overloads that take BinaryData in addition to Flux<ByteBuffer> .

For example for this API:
https://github.com/Azure/azure-sdk-for-java/blob/d92601d9ba0818cdee56701be47a846a5cdfc303/sdk/storage/azure-storage-blob/src/main/java/com/azure/storage/blob/implementation/BlockBlobsImpl.java#L65-L109

the generator should also generate an overload like this:

    /**
     * The interface defining all the services for AzureBlobStorageBlockBlobs to be used by the proxy service to perform
     * REST calls.
     */
    @Host("{url}")
    @ServiceInterface(name = "AzureBlobStorageBloc")
    public interface BlockBlobsService {
        @Put("/{containerName}/{blob}")
        @ExpectedResponses({201})
        @UnexpectedResponseExceptionType(BlobStorageException.class)
        Mono<BlockBlobsUploadResponse> upload(
                @HostParam("url") String url,
                @PathParam("containerName") String containerName,
                @PathParam("blob") String blob,
                @HeaderParam("x-ms-blob-type") String blobType,
                @QueryParam("timeout") Integer timeout,
                @HeaderParam("Content-MD5") String transactionalContentMD5,
                @HeaderParam("Content-Length") long contentLength,
                @HeaderParam("x-ms-blob-content-type") String contentType,
                @HeaderParam("x-ms-blob-content-encoding") String contentEncoding,
                @HeaderParam("x-ms-blob-content-language") String contentLanguage,
                @HeaderParam("x-ms-blob-content-md5") String contentMd5,
                @HeaderParam("x-ms-blob-cache-control") String cacheControl,
                @HeaderParam("x-ms-meta-") Map<String, String> metadata,
                @HeaderParam("x-ms-lease-id") String leaseId,
                @HeaderParam("x-ms-blob-content-disposition") String contentDisposition,
                @HeaderParam("x-ms-encryption-key") String encryptionKey,
                @HeaderParam("x-ms-encryption-key-sha256") String encryptionKeySha256,
                @HeaderParam("x-ms-encryption-algorithm") EncryptionAlgorithmType encryptionAlgorithm,
                @HeaderParam("x-ms-encryption-scope") String encryptionScope,
                @HeaderParam("x-ms-access-tier") AccessTier tier,
                @HeaderParam("If-Modified-Since") DateTimeRfc1123 ifModifiedSince,
                @HeaderParam("If-Unmodified-Since") DateTimeRfc1123 ifUnmodifiedSince,
                @HeaderParam("If-Match") String ifMatch,
                @HeaderParam("If-None-Match") String ifNoneMatch,
                @HeaderParam("x-ms-if-tags") String ifTags,
                @HeaderParam("x-ms-version") String version,
                @HeaderParam("x-ms-client-request-id") String requestId,
                @HeaderParam("x-ms-tags") String blobTagsString,
                @HeaderParam("x-ms-immutability-policy-until-date") DateTimeRfc1123 immutabilityPolicyExpiry,
                @HeaderParam("x-ms-immutability-policy-mode") BlobImmutabilityPolicyMode immutabilityPolicyMode,
                @HeaderParam("x-ms-legal-hold") Boolean legalHold,
                @BodyParam("application/octet-stream") BinaryData body,
                @HeaderParam("Accept") String accept,
                Context context);

[weidongxu-microsoft]

#1498