Add mpc package (#538)

* Add mpc package

mpc is a command line client for the Music Player Daemon (MPD).

references termux/termux-packages/#536

* mpc: fix source url

* mpc: set maintainer to @mklein994

packages/mpc/build.sh

@@ -0,0 +1,11 @@
+pkgname=mpc
+TERMUX_PKG_HOMEPAGE=https://www.musicpd.org/clients/mpc/
+TERMUX_PKG_DESCRIPTION="Minimalist command line interface for MPD"
+TERMUX_PKG_MAINTAINER="Matthew Klein @mklein994"
+TERMUX_PKG_DEPENDS="libmpdclient"
+_MAIN_VERSION=0
+_PATCH_VERSION=28
+TERMUX_PKG_VERSION=${_MAIN_VERSION}.${_PATCH_VERSION}
+TERMUX_PKG_SRCURL=https://www.musicpd.org/download/${pkgname}/${_MAIN_VERSION}/${pkgname}-${_MAIN_VERSION}.${_PATCH_VERSION}.tar.xz
+# Include some useful scripts for editing playlists
+TERMUX_PKG_KEEP_SHARE_DOC=yes