* feat: add icons and colors to telescope picker
* feat: add configuration options for telescope icons
* fix: remove highlight group for telescope normal selection
Telescope extension folder structure is described here:
https://github.com/nvim-telescope/telescope.nvim/wiki/Extensions#extension-folder-structure
When `telescope.load_extension(<name>)` is done, the name is loaded from
path `telescope._extensions.<name>`. With the current structure, one
could do `telescope.load_extension('finders')` and then it will be
available to load through `Telescope finders` which will error
> Error executing Lua callback: ...share/nvim/lazy/telescope.nvim/lua/telescope/command.lua:193: attempt to call a nil value
> stack traceback:
> ...share/nvim/lazy/telescope.nvim/lua/telescope/command.lua:193: in function 'run_command'
> ...share/nvim/lazy/telescope.nvim/lua/telescope/command.lua:253: in function 'load_command'
> ...ocal/share/nvim/lazy/telescope.nvim/plugin/telescope.lua:108: in function <...ocal/share/nvim/lazy/telescope.nvim/plugin/telescope.lua:107>