update harpoon to harpoon 2

lua/core/harpoon.lua

@@ -0,0 +1,57 @@
+local pickers = require("telescope.pickers")
+local finders = require("telescope.finders")
+local conf = require("telescope.config").values
+local actions = require("telescope.actions")
+local action_set = require("telescope.actions.set")
+local action_state = require("telescope.actions.state")
+local harpoon = require('harpoon')
+
+local M = {}
+
+function M.switcher()
+  local filepaths = {}
+  for _, item in ipairs(harpoon:list().items) do
+    table.insert(filepaths, item.value)
+  end
+
+  pickers.new({
+    prompt_title = "Harpoon",
+    finder = finders.new_table { results = filepaths },
+    sorter = conf.generic_sorter(),
+    previewer = conf.file_previewer {},
+    attach_mappings = function(prompt_bufnr, map)
+      actions.move_selection_previous:replace(function()
+        action_set.shift_selection(prompt_bufnr, -1)
+      end)
+      actions.move_selection_next:replace(function()
+        action_set.shift_selection(prompt_bufnr, 1)
+      end)
+
+      -- remove harpoon item
+      -- TODO:
+
+      -- select items, and open buffer
+      vim.keymap.set("n", "<C-v>", function()
+        if action_state.get_selected_entry() then
+          actions.close(prompt_bufnr)
+          vim.cmd("vsplit "..action_state.get_selected_entry()[1])
+        end
+      end)
+      vim.keymap.set({ "n", "i" }, "<C-s>", function()
+        if action_state.get_selected_entry() then
+          actions.close(prompt_bufnr)
+          vim.cmd("split "..action_state.get_selected_entry()[1])
+        end
+      end)
+      actions.select_default:replace(function()
+        if action_state.get_selected_entry() then
+          actions.close(prompt_bufnr)
+          vim.cmd("e "..action_state.get_selected_entry()[1])
+        end
+      end)
+      return true
+    end
+  }):find()
+end
+
+return M