fix(picker): create `Picker:accept()` and `Picker:cancel()`

lua/artio/picker.lua

···
   end)
 end
 
+function Picker:accept()
+  coroutine.resume(self.co, action_enum.accept)
+end
+
+function Picker:cancel()
+  coroutine.resume(self.co, action_enum.cancel)
+end
+
 function Picker:fix()
   self.idx = math.max(self.idx, self.opts.preselect and 1 or 0)
   self.idx = math.min(self.idx, #self.matches)

lua/artio/utils.lua

···
         return qfitem
       end)
       :totable())
-    coroutine.resume(self.co, 1)
+    self:cancel()
   end, function(_)
     vim.cmd.copen()
   end)
···
         return qfitem
       end)
       :totable())
-    coroutine.resume(self.co, 1)
+    self:cancel()
   end, function(_)
     vim.cmd.copen()
   end)
···
 function utils.make_fileactions(fn)
   return {
     split = require("artio").wrap(function(self)
-      coroutine.resume(self.co, 1)
+      self:cancel()
     end, function(self)
       local item = self:getcurrent()
       if not item then
···
       vim.api.nvim_open_win(buf, true, { win = -1, vertical = false })
     end),
     vsplit = require("artio").wrap(function(self)
-      coroutine.resume(self.co, 1)
+      self:cancel()
     end, function(self)
       local item = self:getcurrent()
       if not item then
···
       vim.api.nvim_open_win(buf, true, { win = -1, vertical = true })
     end),
     tabnew = require("artio").wrap(function(self)
-      coroutine.resume(self.co, 1)
+      self:cancel()
     end, function(self)
       local item = self:getcurrent()
       if not item then

plugin/artio.lua

···
   "i",
   "<Plug>(artio-action-accept)",
   wrap(function(self)
-    coroutine.resume(self.co, 0)
+    self:accept()
   end)
 )
 vim.keymap.set(
   "i",
   "<Plug>(artio-action-cancel)",
   wrap(function(self)
-    coroutine.resume(self.co, 1)
+    self:cancel()
   end)
 )
 vim.keymap.set(