feat(aspen/emacs): Begin a complete emacs config revamp

I'm still on doom, but without all the cruft I've accumulated over the
last ~6 years it's actually good and fast and nice. Also, the config is
literate now!

The old emacs is still in .emacs.d, since occasionally I want to
reference it, but eventually I'll just get rid of it

Change-Id: Icda840d798594f7e6b188dba044494597d5f6043
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10999
Reviewed-by: aspen <root@gws.fyi>
Tested-by: BuildkiteCI

users/aspen/emacs/snippets/js2-mode/module

@@ -0,0 +1,12 @@
+# key: module
+# name: module
+# expand-env: ((yas-indent-line (quote fixed)))
+# condition: (= (length "module") (current-column))
+# --
+/**
+ * @fileOverview $1
+ * @name ${2:`(file-name-nondirectory (buffer-file-name))`}
+ * @author Griffin Smith
+ * @license Proprietary
+ */
+$3