Move move .emacs.d out of configs/shared

Moving all of my Emacs-related files into their own directory at the root of
this repository.

emacs/.emacs.d/snippets/rjsx-mode/jest-describe-test

@@ -0,0 +1,10 @@
+# -*- mode: snippet -*-
+# name: Jest describe/test block
+# key: dsc
+# --
+describe('$1', () => {
+  test('$2', () => {
+
+    expect($3).toEqual($4)
+  })
+})