Merge #16299: bench: Move generated data to a dedicated translation unit

Summary:
3d60a03a7cfb2d46b5f10633e9f6a9a36b8cb76f bench: Move generated data to a dedicated translation unit (João Barbosa)

Pull request description:

With this change multiple benchmarks can use the same data without incurring in a bigger binary.

ACKs for top commit:

laanwj:
  code review ACK 3d60a03a7cfb2d46b5f10633e9f6a9a36b8cb76f

Tree-SHA512: 8903bb09e4327c88e585a09bc7df1cbdfc18ebdc5d9c86bf3d6d9252a05eaf18b14ecd2bafdacd82f05a659e4b35ecd301c36011c97f7bf89302793165b00fdc

Backport of Core PR16299

Test Plan:

ninja check bench-bitcoin

Reviewers: #bitcoin_abc, deadalnix

Reviewed By: #bitcoin_abc, deadalnix

Subscribers: deadalnix

Differential Revision: https://reviews.bitcoinabc.org/D5980