Multicall V2.5 implementation (#624)

* Cherry picked

* Added refrerences

* Cherry picked DTO files

* Added config

* Auto-duplicate Package Samples

* Connecting to unity buttons

* Auto-duplicate Package Samples

* Function triggering

* Trying to get call data to be accepted

* Refactored to contract style

* No idea how to get logic in to unity

* Saved unity files

* Finally referenced in the game

* Attempting to init packages

* Pushing for support

* ambiguous method compile error and MultiCall already bound runtime error fixed

* ProjectConfig returning bool

* Works without multicall again

* Calls are successful, return decode, not so much

* Results returned as expected

* Fixed merge, scripts still broken

* Auto-duplicate Package Samples

* retrigger checks

* Updated comments

* rebuilt & removed file again

* Auto-duplicate Package Samples

* Rebuilt

* Lint fix

* Rebuilt

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Co-authored-by: RyRy79261 <RyRy79261@users.noreply.github.com>
Co-authored-by: robGG1997 <robel@chainsafe.io>
Co-authored-by: Peter Kalambet <peter@kalambet.dev>