Add support for middleware class in add_middleware method

[Daxexs]

Note: supports async

Example:

import flet_easy as fs
import flet as ft

app = fs.FletEasy()


def starting_page(data: fs.Datasy):
    print(f"\n⚡[MIDDLEWARES RUNNING]\n-> Route:{data.route}\n1. Loading the page")


async def starting_page_two(data: fs.Datasy):
    # ("2. Loading the page")
    routes = [
        "/dashboard",
    ]
    if data.route not in routes:
        print("-> Redirection to path (/l)")
        return data.redirect("/")


# add class to middleware custom
class CustomMiddlewareInit(fs.MiddlewareRequest):
    def before_request(self):
        print("/// (app-root) Before request", self.data)

    async def after_request(self):
        print("/// (app-root) After request")


app.add_middleware([starting_page, starting_page_two, CustomMiddlewareInit])

@app.page("/", title="index")
def home(data:fs.Datasy):
      return ft.View(
        controls=[
            ft.Text("Home page"),
       ]
     )

app.run()