Add identify/identifyidx script commands and identifyall atcommand

[guilherme-gm]

Pull Request Prelude

• I have followed proper Hercules code styling.
• I have read and understood the contribution guidelines before making this PR.
• I am aware that this PR may be closed if the above-mentioned criteria are not fulfilled.

Changes Proposed

This PR implements script commands to identify items, although lots of scripts nowadays kind of fake that behavior by using a combination of delitem2 + getitem2, this leads to wrong behavior when items have more information, like random options (as shown in this forum post, where doing this leads to losing dropped options). New script commands:

• identify(<Item ID>): Identifies the first unidentified item with ID = "Item ID"
• identifyidx(<idx>): Identifies item at inventory index idx.

I took the chance to also add @identifyall atcommand, because it is quite boring to identify item per item when you are testing lots of drops.

Issues addressed:

[HerculesWSAPI]

This change is 

[Emistry]

perhaps move this line to before the for-loop? so that it won't need to go through the loop everytime even if we are just using @identify to identify one item.

[guilherme-gm]

I was wondering that too, but it would duplicate most of the loop code so I wasn't sure if I should

[dastgirp]

@Emistry it needs to loop even if you use @identify, to know how many item needs to be identified.
That was the old behavior too.

[guilherme-gm]

Yes, it is as dastgir said. Can I mark as resolved and leave it as is?

[4144]

for faster code if (identifyall) better move outside of for
this mean for faster code need two for one inside if block and second inside else block

[guilherme-gm]

Done. I'm wondering, would make more sense to make a separate command block instead of using the same block + strcmp?

[MishimaHaruna]

@guilherme-gm I force-pushed on your branch a minute after you did (without realizing) - if you had made any changes (or just to restore your gpg signature, if any), please force-push again, otherwise I'll merge this as is

[guilherme-gm]

@MishimaHaruna no problem :) you can merge it as is