feat(tableHelper): add getEntryKeyByValue

[HotaruBlaze]

This is a kinda lazy way but only working way I found of handling #42, I initially tried to make it return the table to be modified, but it does not seem to work. So the closest i got was returning a matching key on match, and using that for the table.

Example of how i'm using it below.

local playerVoidStorageName = tableHelper.getEntryKeyByValue(WorldInstance.data.voidStorage, playerName)
if not playerVoidStorageName then
	WorldInstance.data.voidStorage[playerName] = { storageId = "", hasAccess = {} }
	playerVoidStorageName = playerName
else

local storageId = WorldInstance.data.voidStorage[playerVoidStorageName].storageId

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Issue #46: Accidently pushed the non-working broken function attempt of returning a table instead of the key, aswell as named the branch the bad function pushed.

[HotaruBlaze]

Addressed the comments, just did a force push to reuse the commit message cuz I'm still waking up. should all be good now, tested it to make sure it still works fine.