Add snippets

snippets/elixir/he

@@ -0,0 +1,4 @@
+def handle_event("{event}", {map}, socket) do
+    {body}
+    {:noreply, socket}
+end

snippets/elixir/hi

@@ -0,0 +1,4 @@
+def handle_info("{info}", {map}, socket) do
+    {body}
+    {:noreply, socket}
+end

snippets/elixir/hp

@@ -0,0 +1,4 @@
+def handle_params("{param}", {map}, socket) do
+    {body}
+    {:noreply, socket}
+end

snippets/elixir/liveview

@@ -1,5 +1,5 @@
 defmodule {Package}.{Name}Live do
-  use {Package}
+  use {Package}, :live_view
   @impl true
 
   def mount(_params, _session, socket) do