plguins/lsp: add perlpls language server (#794)

Author: GeoffreyFrogeye

plugins/lsp/language-servers/default.nix

@@ -438,6 +438,11 @@ with lib; let
         '';
       };
     }
+    {
+      name = "perlpls";
+      description = "Enable PLS, for Perl";
+      package = pkgs.perlPackages.PLS;
+    }
     {
       name = "pest_ls";
       description = "Enable pest_ls, for pest";

tests/test-sources/plugins/lsp/nvim-lsp.nix

@@ -115,6 +115,7 @@
         nil_ls.enable = true;
         nixd.enable = true;
         omnisharp.enable = true;
+        perlpls.enable = true;
         pest_ls.enable = true;
         prismals.enable = true;
         pylsp.enable = true;