fix(java): repair Java debugger configuration and add run keymaps

- Fix debug bundles not being passed to JDTLS init_options
- Add on_attach callback to setup DAP after LSP attaches
- Remove broken manual Java DAP adapter (now handled by nvim-jdtls)
- Add java-debug-adapter and java-test to Mason ensure_installed
- Add new Java keymaps: debug, test, run (file/maven/gradle)

lua/cargdev/plugins/lsp/mason.lua

@@ -50,6 +50,8 @@ return {
         "pylint",
         "eslint_d",
         "tree-sitter-cli", -- required for nvim-treesitter parser compilation
+        "java-debug-adapter", -- Java debugger
+        "java-test", -- Java test runner
       },
     })
   end,