Add TODO.md and WISHLIST.md

* TODO.md - for small, easier tasks that shouldn't require any (or many)
  new components on the codebase
* WISHLIST.md - for larger tasks that require more work, thought, and
  code to be added. Probably deserving of their own branches.

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

TODO.md

@@ -0,0 +1,7 @@
+# TODO
+
+For items and features that should be relatively easy/simple to implement. No new components needed,
+just modifying existing code.
+
+* Channel passwords
+* Server passwords