feat: added java support I think

lua/custom/plugins/java.lua

@@ -0,0 +1,19 @@
+return {
+  "simaxme/java.nvim",
+  config = function()
+    require("java").setup {
+      rename = {
+        enable = true, -- enable the functionality for renaming java files
+        nvimtree = true, -- enable nvimtree integration
+        write_and_close = false, -- automatically write and close modified (previously unopened) files after refactoring a java file
+      },
+      snippets = {
+        enable = true, -- enable the functionality for java snippets
+      },
+      root_markers = { -- markers for detecting the package path (the package path should start *after* the marker)
+        "main/java/",
+        "test/java/",
+      },
+    }
+  end,
+}