global: improve the configuration

- Adds the rainbow_csv plugin to improve CSV file support.
- Sets mutliple filetypes for markdown plugins (`pandoc`, `markdown`).
  - `mkdnflow`.
  - `markdownpreview`.
  - `marksman` language server (but it doesn't work for pandoc
    filetype).
- Sets folding level to 1 to fold from the level 2 headings.
- Sets the python virtualenv as python3 provider.
- Updates the English dictionnaries.

Co-Authored-by: iGor milhit <igor@milhit.ch>

init.lua

@@ -272,6 +272,13 @@ vim.o.termguicolors = true
 -- Set the spelling for English, French and German.
 vim.opt.spelllang = 'en,fr,de'
 
+-- Set the folding level to 1, to allow level 2 headers to be seen.
+vim.opt.foldlevel = 1
+
+-- Set a python virtualenv as python3 provider.
+--   `vim.env.HOME` uses the neovim API to fetch the $HOME env.
+vim.g.python3_host_prog = 'vim.env.HOME/.pyenv/versions/neovim3/bin/python'
+
 -- [[ Basic Keymaps ]]
 
 -- Keymaps for better default experience
@@ -456,6 +463,13 @@ local servers = {
   -- rust_analyzer = {},
   -- tsserver = {},
   
+  marksman = {
+    ft = {
+      'markdown',
+      'pandoc'
+    }
+  },
+
   lua_ls = {
     Lua = {
       workspace = { checkThirdParty = false },

lua/custom/plugins/markdownpreview.lua

@@ -7,7 +7,10 @@ vim.cmd([[ let g:mkdp_theme = 'light' ]])
 return {
   {
     "iamcco/markdown-preview.nvim",
-    ft = "pandoc",
+    ft = {
+      'pandoc',
+      'markdown'
+    },
     lazy = true,
     build = "cd app && yarn install",
   },

lua/custom/plugins/mkdnflow.lua

@@ -9,7 +9,10 @@ vim.keymap.set({'n','x','v'}, '<leader>tf', '<cmd>MkdnTableFormat<CR>', {desc =
 return {
   {
     "jakewvincent/mkdnflow.nvim",
-    ft = 'pandoc',
+    ft = {
+      'pandoc',
+      'markdown'
+    },
     lazy = true,
     config = function ()
       require('mkdnflow').setup({

lua/custom/plugins/rainbow-csv.lua

@@ -0,0 +1,21 @@
+-- In order to manage CSV files
+
+return {
+    'cameron-wags/rainbow_csv.nvim',
+    config = true,
+    ft = {
+        'csv',
+        'tsv',
+        'csv_semicolon',
+        'csv_whitespace',
+        'csv_pipe',
+        'rfc_csv',
+        'rfc_semicolon'
+    },
+    cmd = {
+        'RainbowDelim',
+        'RainbowDelimSimple',
+        'RainbowDelimQuoted',
+        'RainbowMultiDelim'
+    }
+}

spell/en.utf-8.add

@@ -0,0 +1,2 @@
+AoU
+Floriane