Bazel rules for fusesoc (EDA automation)

For the time being, tis is a demo only. Don't read too much into it.

Maintenance

Example run

Install and run fusesoc:

bazel run //third_party/fusesoc -- --help

Updating the list of fusesoc python dependencies.

bazel run //third_party/fusesoc:requirements.update

Example use in a repository

cd integration && bazel build //... && cat bazel-bin/fusesoc.txt