[Feature] Fix tools and add tests

[zzfoo]

It seems that the tools haven't been thoroughly tested; some tools just don't work. So I'm planning to check every tool, add tests, and make sure they all work as expected.

Tools

• Arxiv
• BingSearch
• CurrencyConverterAPI
• GooglePlacesAPI
• GoogleSearch
• MoonPhaseSearch
• Wikipedia
• WolframAlpha
• WordsAPI
• HotelSearchAPI, discord id: FlynnFlag
• TopMovieAPI
• TopSeriesAPI
• WeatherAPI
• SongAutocompleteAPI
• AirportSearch, discord id: zhonghuali
• HotelLocationSearch
• RestaurantLocationSearch

[TataKKKL]

Hi @zzfoo, I am thinking of assigning these unit tests to a new contributor as an onboarding task. Let's use this issue as a mega-thread for this. Thanks for creating it!

[FlynnFlag]

I will proceed with adding the unit tests for the "HotelSearchAPI"

[Firy01]

I will take the airport search test cases.

[PetarSPal]

I would like to write TopSeriesAPI unit tests.

[Cyberhoney]

✅ I will take the Top Movie API Unit Test!

[itsthemoon]

I just recently made a pull request that changes a couple of the tools because they weren't working as intended as you all know. Might want to check that out