switch packer for pckr, fix indent-blankline and code folding

.config/nvim/lua/config/pckr.lua

@@ -0,0 +1,71 @@
+local function bootstrap_pckr()
+  local pckr_path = vim.fn.stdpath("data") .. "/pckr/pckr.nvim"
+
+  if not (vim.uv or vim.loop).fs_stat(pckr_path) then
+    vim.fn.system({
+      'git',
+      'clone',
+      "--filter=blob:none",
+      'https://github.com/lewis6991/pckr.nvim',
+      pckr_path
+    })
+  end
+
+  vim.opt.rtp:prepend(pckr_path)
+end
+
+bootstrap_pckr()
+
+require('pckr').add{
+    {
+        'nvim-telescope/telescope.nvim',
+        tag = '0.1.1',
+        -- or branch = '0.1.x',
+        requires = { {'nvim-lua/plenary.nvim'} }
+    };
+    "ellisonleao/gruvbox.nvim";
+    {
+        'nvim-treesitter/nvim-treesitter',
+        run = function()
+            local ts_update = require('nvim-treesitter.install').update({ with_sync = true })
+            ts_update()
+        end,
+    };
+    {
+        'ThePrimeagen/harpoon',
+        requires = { {'nvim-lua/plenary.nvim'} }
+    };
+    'mbbill/undotree';
+    'tpope/vim-fugitive';
+    'airblade/vim-gitgutter';
+    'lukas-reineke/indent-blankline.nvim';
+    'JoosepAlviste/nvim-ts-context-commentstring';
+    'numToStr/Comment.nvim';
+    'lervag/vimtex';
+    {
+        'neovim/nvim-lspconfig',
+        requires = {
+            -- LSP Support
+            {'williamboman/mason.nvim'},
+            {'williamboman/mason-lspconfig.nvim'},
+            -- DAP Support
+            {'mfussenegger/nvim-dap'},
+            {'mfussenegger/nvim-dap-python'},
+            {'jay-babu/mason-nvim-dap.nvim'},
+            -- Autocompletion
+            {'hrsh7th/nvim-cmp'},
+            {'hrsh7th/cmp-nvim-lsp'},
+            {'hrsh7th/cmp-buffer'},
+            {'hrsh7th/cmp-path'},
+            {'hrsh7th/cmp-cmdline'},
+            -- Snippets
+            {'L3MON4D3/LuaSnip'},
+            {'saadparwaiz1/cmp_luasnip'},
+            {'rafamadriz/friendly-snippets'},
+            {'onsails/lspkind.nvim'},
+            -- Utils
+            {'j-hui/fidget.nvim'},
+            {'folke/neodev.nvim'}
+        };
+    };
+}