add "input" command

Argument commands

/input score <target:string> <objective:string> [syntaxs] <command:"string"> 

/input storage <storageobject:string> <key:string> [syntaxs] <command:"string">

score：Execute the command with the score assigned as an argument.

storage：Execute the command with the specific address of the storage assigned as an argument. <target:string>：Specify the target.

<objective:string>：Specifies the target object. If the object does not exist or no data exists in the object, an error will result.

<storageobject:string>：Specify storage.

<key:string>：address. You can specify the storage itself with *.

<command:"string">：Specify the object to be set as the nth argument with $n.

[syntaxs]：Repeat input syntax.

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<P.S.>

I am using a translation tool, so the sentence may not be correct.