added bootstrapping for packer

.config/nvim/lua/lennartalff/packer.lua

@@ -1,4 +1,16 @@
-vim.cmd [[packadd packer.nvim]]
+-- packer bootstrapping
+local ensure_packer = function()
+    local fn = vim.fn
+    local install_path = fn.stdpath('data') .. '/site/pack/packer/start/packer.nvim'
+    if fn.empty(fn.glob(install_path)) > 0 then
+        fn.system({ 'git', 'clone', '--depth', '1', 'https://github.com/wbthomason/packer.nvim', install_path })
+        vim.cmd [[packadd packer.nvim]]
+        return true
+    end
+    return false
+end
+
+local packer_bootstrap = ensure_packer()
 
 return require('packer').startup(function(use)
     -- Packer can manage itself

.config/nvim/plugin/packer_compiled.lua

@@ -89,6 +89,11 @@ _G.packer_plugins = {
     path = "/home/lennartalff/.local/share/nvim/site/pack/packer/start/formatter.nvim",
     url = "https://github.com/mhartington/formatter.nvim"
   },
+  ["gitsigns.nvim"] = {
+    loaded = true,
+    path = "/home/lennartalff/.local/share/nvim/site/pack/packer/start/gitsigns.nvim",
+    url = "https://github.com/lewis6991/gitsigns.nvim"
+  },
   ["lsp-zero.nvim"] = {
     loaded = true,
     path = "/home/lennartalff/.local/share/nvim/site/pack/packer/start/lsp-zero.nvim",