git: Add methods to list and remove tags.
git: Add methods to list and remove tags.

nzjrs/cerbero,EricssonResearch/cerbero,flexVDI/cerbero,ford-prefect/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,nicolewu/cerbero,multipath-rtp/cerbero,shoreflyer/cerbero,shoreflyer/cerbero,ramaxlo/cerbero,flexVDI/cerbero,cee1/cerbero-mac,brion/cerbero,BigBrother-International/gst-cerbero,GStreamer/cerbero,nirbheek/cerbero-old,shoreflyer/cerbero,jackjansen/cerbero,AlertMe/cerbero,BigBrother-International/gst-cerbero,brion/cerbero,nirbheek/cerbero,AlertMe/cerbero,ramaxlo/cerbero,nzjrs/cerbero,ikonst/cerbero,fluendo/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,EricssonResearch/cerbero,superdump/cerbero,justinjoy/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,sdroege/cerbero,davibe/cerbero,nirbheek/cerbero,davibe/cerbero,jackjansen/cerbero,sdroege/cerbero,multipath-rtp/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,fluendo/cerbero,centricular/cerbero,GStreamer/cerbero,atsushieno/cerbero,OptoFidelity/cerbero,centricular/cerbero,ikonst/cerbero,multipath-rtp/cerbero,brion/cerbero,OptoFidelity/cerbero,davibe/cerbero,ikonst/cerbero,brion/cerbero,nirbheek/cerbero,ikonst/cerbero,BigBrother-International/gst-cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,nirbheek/cerbero-old,freedesktop-unofficial-mirror/gstreamer__cerbero,nirbheek/cerbero-old,centricular/cerbero,brion/cerbero,ford-prefect/cerbero,multipath-rtp/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,superdump/cerbero,fluendo/cerbero,nirbheek/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,GStreamer/cerbero,AlertMe/cerbero,flexVDI/cerbero,cee1/cerbero-mac,jackjansen/cerbero-2013,jackjansen/cerbero-2013,BigBrother-International/gst-cerbero,ramaxlo/cerbero,lubosz/cerbero,lubosz/cerbero,ramaxlo/cerbero,ford-prefect/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,OptoFidelity/cerbero,jackjansen/cerbero,flexVDI/cerbero,jackjansen/cerbero,atsushieno/cerbero,ford-prefect/cerbero,justinjoy/cerbero,ikonst/cerbero,GStreamer/cerbero,nirbheek/cerbero-old,atsushieno/cerbero,BigBrother-International/gst-cerbero,GStreamer/cerbero,EricssonResearch/cerbero,multipath-rtp/cerbero,davibe/cerbero,AlertMe/cerbero,nzjrs/cerbero,justinjoy/cerbero,EricssonResearch/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,sdroege/cerbero,shoreflyer/cerbero,ramaxlo/cerbero,flexVDI/cerbero,fluendo/cerbero,superdump/cerbero,centricular/cerbero,superdump/cerbero,shoreflyer/cerbero,nzjrs/cerbero,cee1/cerbero-mac,jackjansen/cerbero-2013,centricular/cerbero,nzjrs/cerbero,cee1/cerbero-mac,ylatuya/cerbero,OptoFidelity/cerbero,jackjansen/cerbero-2013,lubosz/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,sdroege/cerbero,atsushieno/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,lubosz/cerbero,sdroege/cerbero,jackjansen/cerbero-2013,nicolewu/cerbero,EricssonResearch/cerbero,AlertMe/cerbero,nicolewu/cerbero,fluendo/cerbero,atsushieno/cerbero,ylatuya/cerbero,justinjoy/cerbero,ylatuya/cerbero,ylatuya/cerbero