plugins/nvim-jdtls: rename to jdtls, migrate to mkNeovimPlugin

plugins/by-name/jdtls/default.nix

@@ -0,0 +1,54 @@
+{
+  lib,
+  pkgs,
+  ...
+}:
+lib.nixvim.plugins.mkNeovimPlugin {
+  name = "jdtls";
+  packPathName = "nvim-jdtls";
+  package = "nvim-jdtls";
+
+  maintainers = [ lib.maintainers.GaetanLepage ];
+
+  # TODO: Added 2025-04-07; remove after 25.05
+  inherit (import ./deprecations.nix lib)
+    imports
+    deprecateExtraOptions
+    ;
+
+  extraOptions = {
+    jdtLanguageServerPackage = lib.mkPackageOption pkgs "jdt-language-server" {
+      nullable = true;
+    };
+  };
+
+  setup = ".start_or_attach"; # only used settingsDescription
+  callSetup = false;
+  extraConfig = cfg: {
+    extraPackages = [ cfg.jdtLanguageServerPackage ];
+
+    autoCmd = [
+      {
+        event = "FileType";
+        pattern = "java";
+        callback.__raw = ''
+          function ()
+            require('jdtls').start_or_attach(${lib.nixvim.toLuaObject cfg.settings})
+          end
+        '';
+      }
+    ];
+  };
+
+  settingsOptions = import ./settings-options.nix lib;
+
+  settingsExample = {
+    cmd = [
+      "jdtls"
+      { __raw = "'--jvm-arg='..vim.api.nvim_eval('g:NVIM_LOMBOK')"; }
+    ];
+    root_dir.__raw = ''
+      vim.fs.dirname(vim.fs.find({'gradlew', '.git', 'mvnw'}, { upward = true })[1])
+    '';
+  };
+}