feat(session): add vim-workspace plugin and session directory (#1289)

* feat(session): add vim-workspace plugin and session directory

* refactor(vim-workspace): refactor configuration to be user configurable

---------

Co-authored-by: Micah Halter <micah@mehalter.com>

lua/astrocommunity/session/vim-workspace/README.md

@@ -0,0 +1,14 @@
+# vim-workspace
+
+Automated Vim session management with file auto-save and persistent undo history 
+
+The configuration of the plugin:
+
+- disable resession.nvim - default astronvim session management
+- auto create and auto load the workspace when neovim was started without any arguments
+   - just `cd dir` and `nvim` to start the workspace
+- auto save the workspace when neovim was closed
+- handle neotree, NERDTree, git windows
+- fix paths to use cache path of neovim
+
+**Repository:** <https://github.com/thaerkh/vim-workspace>

lua/astrocommunity/session/vim-workspace/init.lua

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+return {
+  "thaerkh/vim-workspace",
+  priority = 10000,
+  lazy = false,
+  specs = {
+    { "resession.nvim", enabled = false },
+    {
+      "AstroNvim/astrocore",
+      ---@param opts AstroCoreOpts
+      opts = function(_, opts)
+        local sessionoptions = {} -- https://github.com/thaerkh/vim-workspace/issues/11
+        for _, value in ipairs(vim.tbl_get(opts, "options", "opt", "sessionoptions") or vim.opt.sessionoptions:get()) do
+          if value ~= "blank" then table.insert(sessionoptions, value) end
+        end
+        return require("astrocore").extend_tbl(opts, {
+          autocmds = {
+            autoclose_neotree = {
+              {
+                event = "VimLeave",
+                callback = function()
+                  if vim.fn.exists ":Neotree" == 2 then vim.cmd.Neotree "close" end
+                  if vim.fn.exists ":NERDTreeClose" == 2 then vim.cmd.NERDTreeClose() end
+                end,
+              },
+            },
+          },
+          options = {
+            opt = { sessionoptions = sessionoptions },
+            g = {
+              workspace_autosave_ignore = { "gitcommit", "neo-tree", "nerdtree", "qf", "tagbar" },
+              workspace_session_disable_on_args = 1,
+              workspace_session_directory = vim.fn.stdpath "cache" .. "/vim-workspace.sessions",
+              workspace_undodir = vim.fn.stdpath "cache" .. "/vim-workspace.undodir",
+              workspace_autocreate = 1,
+              workspace_create_new_tabs = 0,
+              -- Because a bug, these two populate search / history, just disable them.
+              workspace_autosave_untrailtabs = 0,
+              workspace_autosave_untrailspaces = 0,
+              workspace_nocompatible = 0,
+            },
+          },
+        })
+      end,
+    },
+  },
+}