Replicate BufExplorer's features

BufExplorer is an excellent plugin to navigate buffers. It has some very useful features such as showing only buffers for the current tab, deleting buffers (addressed on #621), etc. I think Telescope would profit from having these features.

BufExplorer's help screen:

: toggle this help
or o or Mouse-Double-Click : open buffer under cursor
or t : open buffer in another tab
a : toggle find active buffer
b : Fast buffer switching with b
B : toggle if to save/use recent tab or not
d : delete buffer
D : wipe buffer
F : open buffer in another window above the current
f : open buffer in another window below the current
p : toggle splitting of file and path name
q : quit
r : reverse sort
R : toggle showing relative or full paths
s : cycle thru "sort by" fields ['number', 'name', 'fullpath', 'mru', 'extension']
S : reverse cycle thru "sort by" fields
T : toggle if to show only buffers for this tab or not
u : toggle showing unlisted buffers
V : open buffer in another window on the left of the current
v : open buffer in another window on the right of the current

nvim-telescope / telescope.nvim

Replicate BufExplorer's features #655