Word highlighting, lsp_signature, calendar and settings / keybindings

Plugins:

- added word highlighting plugin mywords
- added lsp_signature plugin to show parameter signature while typing a
  function call
- added calendar.vim
- added lush.nvim needed for some theme definitions, though not for the
  nice and current default lunaperche

Keybindings:

- <space>m[mrc] for mywords
- <C-W>0 and <C-W>1 for window close / make single
- <C-,> for lsp references
- <C-.> for lsp definitions

Options:

- highlight last search term
- add I to shortmess to start with an empty file instead of splash
  screen
- fzf uses default-title as theme
- fzf registered as vim.ui.select implementation
- which_key shows global definitions, too

lua/plugins.lua

@@ -43,10 +43,19 @@ require("lazy").setup({
     end,
   },
 
-  -- LSP manager
+  --
+  -- LSP manager and others
+  --
   "williamboman/mason.nvim",
   "williamboman/mason-lspconfig.nvim",
   "neovim/nvim-lspconfig",
+  -- show lsp signature while coding
+  {
+    "ray-x/lsp_signature.nvim",
+    event = "VeryLazy",
+    opts = {},
+    config = function(_, opts) require 'lsp_signature'.setup(opts) end
+  },
 
   -- neogit setup
   {
@@ -90,7 +99,9 @@ require("lazy").setup({
     dependencies = { "nvim-tree/nvim-web-devicons" },
     config = function()
       -- calling `setup` is optional for customization
-      require("fzf-lua").setup({})
+      local fzf = require("fzf-lua")
+      fzf.setup({ "default-title" })
+      fzf.register_ui_select()
     end
   },
 
@@ -119,7 +130,7 @@ require("lazy").setup({
       {
         "<leader>?",
         function()
-          require("which-key").show({ global = false })
+          require("which-key").show({ global = true })
         end,
         desc = "Buffer Local Keymaps (which-key)",
       },
@@ -247,4 +258,25 @@ require("lazy").setup({
       -- refer to the configuration section below
     }
   },
+
+  -- highlight word under cursor
+  {
+    "dwrdx/mywords.nvim",
+  },
+
+  -- Calendar view
+  {
+    "itchyny/calendar.vim"
+  },
+
+  --------------------------------------------------
+  --
+  -- Color schemes
+  --
+  --------------------------------------------------
+  {
+    "rktjmp/lush.nvim"
+    -- if you wish to use your own colorscheme:
+    -- { dir = '/absolute/path/to/colorscheme', lazy = true },
+  },
 })