lsp: add my usual LSPs to the config

lua/lsp.lua

@@ -74,12 +74,13 @@ require('mason-lspconfig').setup()
 --  If you want to override the default filetypes that your language server will attach to you can
 --  define the property 'filetypes' to the map in question.
 local servers = {
-  -- clangd = {},
+  clangd = {},
   -- gopls = {},
-  -- pyright = {},
-  -- rust_analyzer = {},
-  -- tsserver = {},
+  pyright = {},
+  rust_analyzer = {},
+  tsserver = {},
   -- html = { filetypes = { 'html', 'twig', 'hbs'} },
+  texlab = {},
 
   lua_ls = {
     Lua = {