Is it possible to setup a macro that will cast rescue on my target where they are currently standing in one click/macro? Then have it so if I hit ctrl keybind it does one click and moves them to me?
No. The destination targeting of Rescue is a reticle, it only supports @player and @cursor.
As for moving them to you:
#showtooltip
/cast [@player] Rescue
/tar [@mouseover,help,nodead]
Dang so no way to just jump to them 
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