solo: Update deb to provide helios-standalone
solo: Update deb to provide helios-standalone

In its prior incarnation, helios-solo was known as helios-standalone. This
"Provides" line makes it so that helios-solo is installed in case anyone
still tries to `apt-get install helios-standalone`.

molindo/helios,spotify/helios,gtonic/helios,mattnworb/helios,stewnorriss/helios,udomsak/helios,dflemstr/helios,molindo/helios,skinzer/helios,mattnworb/helios,kidaa/helios,DagensNyheter/helios,mavenraven/helios,stewnorriss/helios,kidaa/helios,spotify/helios,udomsak/helios,dflemstr/helios,udomsak/helios,gtonic/helios,dflemstr/helios,mattnworb/helios,DagensNyheter/helios,stewnorriss/helios,spotify/helios,mavenraven/helios,gtonic/helios,mavenraven/helios,kidaa/helios,molindo/helios,skinzer/helios,skinzer/helios,DagensNyheter/helios