[nvim] add tex snippets

.config/nvim/lua/plugin/luasnip.lua

@@ -435,6 +435,13 @@ ls.snippets = {
 			d(2, rec_ls, {}),
 			t({ "", "\\end{itemize}", "" }),
 		}),
+		s("lsra", {
+			t({ "\\begin{itemize}[label=$\\rightarrow$]", "\t\\item " }),
+			i(1),
+                        t({ "" }),
+			d(2, rec_ls, {}),
+			t({ "", "\\end{itemize}", "" }),
+		}),
                 s("frm", {
                         t({ "\\begin{" }),
                         i(1),
@@ -459,6 +466,12 @@ ls.snippets = {
                         f(copy,1),
                         t({ "}", "" }),
                 }),
+                s("tikz", {
+                        t({ "\begin{center}" }),
+                        t({ "\t\\begin{tikzpicture}[main/.style = {draw,circle}]", "\tt" }),
+                        i(1),
+                        t({ "\t\\end{tikzpicture}", "\\end{center}" }),
+                }),
 
 	},
 }