Add myself as maintainer for a few Haskell packages

as nudged to do so by @sternenseemann in
https://github.com/NixOS/nixpkgs/pull/139967#issuecomment-932186960

pkgs/development/haskell-modules/configuration-hackage2nix/main.yaml

@@ -271,6 +271,10 @@ package-maintainers:
     - witch
   ncfavier:
     - lambdabot
+  nomeata:
+    - candid
+    - leb128-cereal
+    - tasty-expected-failure
   pacien:
     - ldgallery-compiler
   peti:

pkgs/development/haskell-modules/hackage-packages.nix

@@ -51106,6 +51106,7 @@ self: {
        ];
        description = "Candid integration";
        license = lib.licenses.asl20;
+       maintainers = with lib.maintainers; [ nomeata ];
      }) {};
 
   "canon" = callPackage
@@ -163544,6 +163545,7 @@ self: {
        ];
        description = "LEB128 and SLEB128 encoding";
        license = lib.licenses.mit;
+       maintainers = with lib.maintainers; [ nomeata ];
      }) {};
 
   "leetify" = callPackage
@@ -261516,6 +261518,7 @@ self: {
        ];
        description = "Mark tasty tests as failure expected";
        license = lib.licenses.mit;
+       maintainers = with lib.maintainers; [ nomeata ];
      }) {};
 
   "tasty-fail-fast" = callPackage