File _service of Package boost

<services>
	<service name="download_url">
	    <param name="host">archives.boost.io</param>
	    <param name="path">/release/1.83.0/source/boost_1_83_0.tar.gz</param>
	</service>
	<service name="verify_file">
		<param name="file">_service:download_url:boost_1_83_0.tar.gz</param>
	   	<param name="verifier">sha256</param>
	   	<param name="checksum">c0685b68dd44cc46574cce86c4e17c0f611b15e195be9848dfd0769a0a207628</param>
	</service>
</services>