feat(third_party/gopkgs): add charmbracelet/{bubbletea,bubbles}

A small go TUI framework based on the Elm Architecture.

Change-Id: I0c400a7b25af682735bfc5061db179e5d1dd75ab
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2853
Reviewed-by: Profpatsch <mail@profpatsch.de>
Reviewed-by: lukegb <lukegb@tvl.fyi>
Tested-by: BuildkiteCI

third_party/gopkgs/github.com/charmbracelet/lipgloss/default.nix

@@ -0,0 +1,21 @@
+{ depot, pkgs, ... }:
+
+depot.nix.buildGo.external {
+  path = "github.com/charmbracelet/lipgloss";
+  src = pkgs.fetchFromGitHub {
+    owner = "charmbracelet";
+    repo = "lipgloss";
+    # unreleased version required by bubbletea
+    rev = "v0.1.0";
+    sha256 = "1chhs492rsq7i4mr6qpjv3d89rvsd23ri6psnmil3ah6i286vl06";
+  };
+
+  deps = with depot.third_party; [
+    # gopkgs."github.com".charmbracelet.bubbletea
+    gopkgs."github.com".lucasb-eyer.go-colorful
+    gopkgs."github.com".muesli.reflow.ansi
+    gopkgs."github.com".muesli.reflow.truncate
+    gopkgs."github.com".muesli.reflow.wordwrap
+    gopkgs."github.com".muesli.termenv
+  ];
+}