ltex: more personalized configuration

TODO: add a shortcut for languages

Source: https://github.com/vigoux/ltex-ls.nvim

lua/lsp.lua

@@ -81,8 +81,26 @@ local servers = {
   tsserver = {},
   -- html = { filetypes = { 'html', 'twig', 'hbs'} },
   texlab = {},
-  ltex = { filetypes = {'markdown', 'latex', 'norg', 'gitcommit'} },
-
+  ltex = {
+    filetypes = {
+      'markdown',
+      'latex',
+      'norg',
+      'gitcommit'
+    },
+    ltex = {
+      language = "auto",
+      diagnosticSeverity = "information",
+      sentenceCacheSize = 2000,
+      additionalRules = {
+        enablePickyRules = true,
+        motherTongue = "fr",
+      },
+      disabledRules = {
+        fr = { "APOS_TYP", "FRENCH_WHITESPACE" }
+      },
+    }
+  },
   lua_ls = {
     Lua = {
       workspace = { checkThirdParty = false },