feat(tvix/eval): Use thiserror for ErrorKind and CatchableErrorKind

thiserror is much more easier to maintain than manually implementing Error and Display.

Change-Id: Ibf13e2d8a96fba69c8acb362b7515274a593dfd6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12452
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: Ilan Joselevich <personal@ilanjoselevich.com>
Tested-by: BuildkiteCI

tvix/Cargo.nix

@@ -15230,6 +15230,10 @@ rec {
             packageId = "test-strategy";
             optional = true;
           }
+          {
+            name = "thiserror";
+            packageId = "thiserror";
+          }
           {
             name = "toml";
             packageId = "toml 0.6.0";