Move wasms to shared resources folder and clean up dockerfiles

[spalladino]

• Moves wasm files from src (in both bb and circuits) to a resources folder, to be accessed from both src and dist. This removes the need for a manual post-build step to copy or symlink the wasm, which was required also when building a package that depended on these. Cleans up dockerfiles to remove these build steps. Fixes Relocate wasm artifact within ts packages #206.
• Copies entire project to each dockerfile, so we don't need to keep dependencies in sync with each dockerfile as well. If performance becomes an issue here, we can change the prepare root script to also update dockerfiles. Fixes Do not use explicit dependencies on Dockerfile #224.

[spypsy]

think the resources idea is nice, no more having to worry about copying to dest, either in docker or during yarn build.
Not a big fan of copying everything in the Dockerfiles but if doesn't actually affect performance I don't see a reason to not do it

[spalladino]

Not a big fan of copying everything in the Dockerfiles but if doesn't actually affect performance I don't see a reason to not do it

We can always roll it back, as long as we automate the listing of deps to copy in the dockerfile!