Do you mean - how to package an EA for distribution via the MetaQuotes Market? If so, then read the various articles about it, such as for example "How to Post a Product in the Market"
However, if are simply looking for way to place the EA on another system, then it is simply a matter of manually placing the the respective files in the respective directories or folders. There is no supported "packaging" system for that.
There are 3rd party tools out there as well, but such a discussion is beyond the scope of this site and referencing such tools is considered advertising and not allowed here.
Well, in that case, if you already know about 3rd party tools such as those for C++ development, then you should place the query on those sites and not here. This site is for MQL development and not about C++ Development and Packaging Tools.
Since, MQL does not offer such tools, and it is not commonly used by the MQL users, this forum is probably not the best place to be placing such queries.
I think you are misunderstanding things. It is not just about a DLL virus infecting your computer, but also the possibility of it infecting the VPS services that MetaQuotes provides via different ISP's.
If DLLs were allowed, then an infected ISP running hundreds of EA's for their customers would cause great problems for many an account, and then they would be liable to pay for the damages that could be quite substantial.
So, I don't think it is silly at all! There is just too much at stake!