rust-mode: add async fn

Author: lroolle

rust-mode/async_fn

@@ -0,0 +1,9 @@
+# -*- mode: snippet -*-
+# name: async function
+# key: afn
+# uuid: afn
+# condition: (doom-snippets-bolp)
+# --
+async fn ${1:function_name}($2) ${3:-> ${4:i32} }{
+   `%`$0
+}

rust-mode/pub_async_fn

@@ -0,0 +1,9 @@
+# -*- mode: snippet -*-
+# name: public async function
+# key: pafn
+# uuid: pafn
+# condition: (doom-snippets-bolp)
+# --
+pub async fn ${1:function_name}($2) ${3:-> ${4:i32} }{
+   `%`$0
+}