图形化界面，简易航线查询系统，数据源为压缩包内的.csv文件
求任意两个机场之间的最短飞行时间。
仅限直飞或 1 次中转，求任意两个机场的航线（航班 ID 顺序表）。
给定起飞时段或者降落时段或者机型要求，求任意两个机场的多个备选航线（航班 ID 顺序表）。
给定起飞时段或者降落时段或者机型要求，求任意两个机场之间的航费（机票价格）最低的路径。(Find the shortest flight time between any two airports.
Only direct flights or one transit are allowed, and the routes of any two airports (flight ID sequence table) are obtained.
Given the take-off time or landing time or aircraft type requirements, find multiple alternative routes (flight ID sequence table) for any two airports.
Given the take-off time or landing time or aircraft type requirements, find the lowest route between any two airports (ticket price).)