Refactor API structure: add internal handling, update templates, and remove deprecated files

public/templates/standard/template.json

@@ -0,0 +1,28 @@
+{
+    "error":{
+        "name":"error",
+        "dir_name":"error",
+        "html_file":"error.html",
+        "css_files":[
+            "error.css"
+        ]
+    },
+    "setup":{
+        "name":"setup",
+        "dir_name":"setup",
+        "html_file":"setup.html",
+        "css_files":[]
+    },
+    "entrys_frontend":{
+        "name":"entrys_frontend",
+        "dir_name":"entrys_frontend",
+        "html_file":"entrys_frontend.html",
+        "css_files":[]
+    },
+    "login":{
+        "name":"login",
+        "dir_name":"login",
+        "html_file":"login.html",
+        "css_files":[]
+    }
+}