Squashed PR #158 and fixup into 1 commit

Squashed PR#158 into 1 single commit;

        Add vaults

        Add documentation:

        Make luachack happy.

        Address review comments

    fixed tabs and formatting of PR #158

lua/vaultpicker.lua

@@ -0,0 +1,42 @@
+local actions = require("telescope.actions")
+local action_state = require("telescope.actions.state")
+local pickers = require("telescope.pickers")
+local finders = require("telescope.finders")
+local conf = require("telescope.config").values
+
+local M = {}
+local vaults = function(telekasten, opts)
+    opts = opts or {}
+    local vaults = telekasten.vaults
+    local _vaults = {}
+    for k, v in pairs(vaults) do
+        table.insert(_vaults, { k, v })
+    end
+    pickers.new(opts, {
+        prompt_title = "Vaults",
+        finder = finders.new_table({
+            results = _vaults,
+            entry_maker = function(entry)
+                return {
+                    value = entry,
+                    display = entry[1],
+                    ordinal = entry[1],
+                }
+            end,
+        }),
+        sorter = conf.generic_sorter(opts),
+        attach_mappings = function(prompt_bufnr, map)
+            actions.select_default:replace(function()
+                actions.close(prompt_bufnr)
+                local selection = action_state.get_selected_entry()
+                -- print(vim.inspect(selection))
+                telekasten.chdir(selection.value[2])
+            end)
+            return true
+        end,
+    }):find()
+end
+
+M.vaults = vaults
+
+return M