fmt: Extend cpp fmt to miner, mempool and validation

[prasannavl]

Summary

• Strip out config and make.sh from Add fmt to miner, mempool and validation #2613
• Format in separate PR to enable easier conflict resolution in pending work
• Note: Will result in CIs failing until the actual format PR (Add fmt to miner, mempool and validation #2613) is merged as well, but helps other pending PRs to be updated easily.

For auto conflict resolution of fmt related files:

# Checkout the updated make.sh and clang format files from this branch (or master after merge)

git checkout master -- make.sh
git checkout master -- src/.clang-format

# Format
./make.sh fmt

Implications

• Storage

  • Database reindex required
  • Database reindex optional
  • Database reindex not required
  • None

• Consensus

  • Network upgrade required
  • Includes backward compatible changes
  • Includes consensus workarounds
  • Includes consensus refactors
  • None