feat: improve UX with vim.notify (#1763)

* fix(notify): don't report request on new line

* ref(notify): update message format

* ref(msgs): always quote values + decrease duplication

* fix(ci): undefined variables

* ref(actions): temporary silent actions.__index errors

* cleanup

* revert: panic effort, we continue to use error for those

Co-authored-by: Simon Hauser <Simon-Hauser@outlook.de>

lua/telescope/_extensions/init.lua

@@ -7,7 +7,7 @@ extensions._health = {}
 local load_extension = function(name)
   local ok, ext = pcall(require, "telescope._extensions." .. name)
   if not ok then
-    error("This extension doesn't exist or is not installed: " .. name .. "\n" .. ext)
+    error(string.format("'%s' extension doesn't exist or isn't installed: %s", name, ext))
   end
   return ext
 end