(Emacs)+snippets from doom-snippet and removed default package

I've re-enabled yasnippet for ease of use, and added a ton of snippets
directly into my Dotfiles so only I get to curate what snippets are
removed.  Screw downloading them off someone else's repository at
their total mercy.

Emacs/.config/emacs/.config/yasnippet/snippets/cc-mode/once

@@ -0,0 +1,11 @@
+# -*- mode: snippet -*-
+# name: #ifndef XXX; #define XXX; #endif
+# key: once
+# uuid: once
+# --
+#ifndef ${1:`(upcase (file-name-nondirectory (file-name-sans-extension (buffer-file-name))))`_H}
+#define $1
+
+$0
+
+#endif /* $1 */