Add dynamic route matching and validation improvements

Introduces dynamic route parameter support in route path computation and schema matching. Adds a utility for sending validation errors, updates schema definitions to support header validation, and refactors server middleware to handle header, body, and query validation with improved error handling. Also adds a placeholder user route and updates dependencies to include 'path-to-regexp'.

schemas/register.js

@@ -1,9 +1,14 @@
 const z = require("zod")
 
 module.exports = {
-    errorFormat: "default",
     POST: {
-        zod: z.object({
+        headers: z.object({
+            authorization: z.string()
+                .startsWith("Bearer ", { message: "Token d'authentification manquant ou invalide." })
+                .optional(),
+            "content-type": z.string().regex(/application\/json/i).optional()
+        }),
+        body: z.object({
             email: z.string()
                 .email({ message: "Invalid E-Mail format." })
                 .toLowerCase(),
@@ -17,7 +22,7 @@ module.exports = {
         }),
         error: {
             code: 422,
-            message: "Invalid body request"
+            message: "Invalid request data"
         }
     }
 }