首次完成数据库登录，注册验证。首次完成，migrate_manager.py迁移多个数据库

app/route/admin.py

@@ -0,0 +1,11 @@
+from flask import Blueprint, request, render_template
+
+admin = Blueprint('admin', __name__, url_prefix='/admin')
+
+
+@admin.route('/', methods=['GET', 'POST'])
+def admin_index():
+    if request.method == "POST":
+        username = request.form["username"]
+        password = request.form["password"]
+    return render_template("admin/admin_index.html")