Patch for vue2 template #175

hi, @nolimits4web .

I am maintaining an old app using Vue2 with f7v5, and I found out f7-cli v3.4.5 is broken, since several library version not matched any more.(mostly are webpack plugins).

So I forked this repo, and make a fix base on v3.4.5

I find there are some people on Forum may want vue2 template too, and may not appropriate to send a PR to main branch. Since is
already vue3 now.

Here is my fix. Hope it may help.
https://github.com/casyalex/framework7-cli/tree/dev/v3.4.6