feat: added java support I think

lua/custom/plugins/jdtls.lua

@@ -0,0 +1,10 @@
+return {
+  "mfussenegger/nvim-jdtls",
+  config = function()
+    local config = {
+      cmd = { "/usr/bin/jdtls" },
+      root_dir = vim.fs.dirname(vim.fs.find({ "gradlew", ".git", "mvnw" }, { upward = true })[1]),
+    }
+    require("jdtls").start_or_attach(config)
+  end,
+}