plugins/jsonls: add settings option

Author: GaetanLepage

plugins/lsp/language-servers/default.nix

@@ -245,6 +245,7 @@ let
         "${cfg.package}/bin/vscode-json-language-server"
         "--stdio"
       ];
+      settings = cfg: { json = cfg; };
     }
     {
       name = "julials";

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

@@ -0,0 +1,20 @@
+{
+  example = {
+    plugins.lsp = {
+      enable = true;
+
+      servers.jsonls = {
+        enable = true;
+
+        settings = {
+          format = {
+            enable = true;
+          };
+          validate = {
+            enable = true;
+          };
+        };
+      };
+    };
+  };
+}