nvim php: split main file as it starts to get abit big

nvim/lua/user/plugins/lang/php/testing.lua

@@ -0,0 +1,16 @@
+
+return {
+    "nvim-neotest/neotest",
+    optional = true,
+    ft = { "php" },
+    dependencies = {
+        "pnx/neotest-phpunit",
+        'V13Axel/neotest-pest',
+    },
+    opts = {
+        adapters = {
+            ["neotest-phpunit"] = {},
+            ["neotest-pest"] = {},
+        }
+    },
+}