feat(notable): Add note listing functionality

Adds a very simple initial display of all notes in chronologically
descending order.

Currently this is a read-only view with no available actions.

Change-Id: I6d47363909f1a9ab8d1d18a1c44966883aa758ad
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1983
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI

tools/emacs-pkgs/notable/default.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ depot, pkgs, ... }:
 
 pkgs.emacsPackages.trivialBuild rec {
   pname = "notable";
@@ -6,5 +6,6 @@ pkgs.emacsPackages.trivialBuild rec {
   src = ./notable.el;
   packageRequires = with pkgs.emacsPackages; [
     dash f ht s
+    depot.tools.emacs-pkgs.dottime
   ];
 }