feat: pretty print timer (#251)

* feat: store times for duplicated keys

* feat: add func for pretty print timer

lua/frecency/timer.lua

@@ -17,8 +17,40 @@ function M.track(event)
     end
   end
   if M.has_lazy then
-    require("lazy.stats").track("[telescope-frecency] " .. event)
+    local stats = require "lazy.stats"
+    ---@param n integer
+    ---@return string
+    local function make_key(n)
+      return ("[telescope-frecency] %s: %d"):format(event, n)
+    end
+    local key
+    local num = 0
+    while true do
+      key = make_key(num)
+      if not stats._stats.times[key] then
+        break
+      end
+      num = num + 1
+    end
+    stats.track(key)
   end
 end
 
+---@return string
+function M.pp()
+  local times = require("lazy.stats")._stats.times
+  local result = vim.tbl_map(function(k)
+    return { event = k, t = times[k] }
+  end, vim.tbl_keys(times))
+  table.sort(result, function(a, b)
+    return a.t < b.t
+  end)
+  return table.concat(
+    vim.tbl_map(function(r)
+      return ("%8.3f : %s"):format(r.t, r.event)
+    end, result),
+    "\n"
+  )
+end
+
 return M