Add snippets for latex (frame)

lua/complete.lua

@@ -2,6 +2,7 @@
 local cmp = require 'cmp'
 local luasnip = require 'luasnip'
 require('luasnip.loaders.from_vscode').lazy_load()
+require('luasnip.loaders.from_lua').lazy_load()
 luasnip.config.setup {
   history = true,
   updateevents = "TextChanged,TextChangedI",

luasnippets/tex.lua

@@ -0,0 +1,26 @@
+local ls = require("luasnip")
+local s = ls.snippet
+local sn = ls.snippet_node
+local t = ls.text_node
+local i = ls.insert_node
+local f = ls.function_node
+local d = ls.dynamic_node
+local fmt = require("luasnip.extras.fmt").fmt
+local fmta = require("luasnip.extras.fmt").fmta
+local rep = require("luasnip.extras").rep
+
+return {
+  s({ trig = "frame", dscr = "A beamer frame" },
+    fmta(
+      [[
+    \begin{frame}{<>}
+      <>
+    \end{frame}
+  ]],
+      {
+        i(1, "title"),
+        i(2, "content")
+      }
+    )
+  ),
+}