Add remaining DLC2 movesets (legendaries, Exeggcute, Duraludon)

[penelopeysm]

Added movesets for a handful of legendary Pokemon, plus Exeggcute and Duraludon which I somehow missed out in #999.

Closes #1006

(This time I iterated through the entire database to make sure that all Pokemon with nonempty SV moveset had at least one level-up move, which was how I caught the two extra missing mons. In theory it's possible that I still missed something, but at least it's much less likely.)

[giginet]

What a quick support! 😮

I confirmed all Legendary Pokémon I listed, Exeggcute, and Duraludon.

It's almost good. But I noticed some Legendary Pokémon have egg moves.

As I investigated the context, PokeAPI doesn't distinguish between egg moves and moves learned only by Move Remember.
https://github.com/PokeAPI/pokeapi/blob/master/data/v2/csv/pokemon_move_methods.csv

So, these data would be correct. Thank you. 🌸 💯

[pokeapi-machine-user]

A PokeAPI/api-data refresh has started. In ~45 minutes the staging branch of PokeAPI/api-data will be pushed with the new generated data.

The staging branch will be deployed in our staging environment and the entire API will be ready to review.

A Pull Request (master<-staging) will be also created at PokeAPI/api-data and assigned to the PokeAPI Core team to be reviewed. If approved and merged new data will soon be available worldwide at pokeapi.co.

[pokeapi-machine-user]

The updater script has finished its job and has now opened a Pull Request towards PokeAPI/api-data with the updated data.

The Pull Request can be seen deployed in our staging environment when CircleCI deploy will be finished (check the start time of the last build).