That's where Benro's QRB95 quick-release rotation lens bracket comes in. The bracket stays attached to your tripod at all times, but the camera is secured on an arm that swivels through 90 degrees.
[Mgx3d] has done that by designing 3D printable bar clamp jaws with a quick release mechanism that can be used with standard T-slot aluminum extrusion. This allows you to create ad-hoc bar clamps ...
Personally, I haven’t found a better quick-release mechanism than the famed Arca Swiss attachment on my 3 Legged Thing Ellie Universal L-Bracket (now succeeded by the 3 Legged Thing Lexie), so ...