fix(rust) :: format the files cargo fmt could not see

[81reap]

Motivation

• cargo fmt silently skipped all 38 files under sqlpage_functions/functions/.
• Eleven of those files had drifted from the default style.

Description

Two commits in this PR.

• 959f73ad
  • moves the module declarations out of the macro into plain mod items next to it. A function missing mod is a resolution error. An orphaned mod is a dead-code warning.
  • rust-analyzer can now resolve these modules too.
  • Adds a .git-blame-ignore-revs scaffold. We need to wait to merge into mainline to be able to pull the commit hash off mainline to ignore.
• a732ccac runs cargo fmt --all. committed in a separate commit so that it can be added to .git-blame-ignore-revs.

Testing

n/a :: no behaviour changes

[81reap]

@lovasoa due to the .git-blame-ignore-revs, this PR should be merged as is. That way both commits independently show up at the tip of main. If you squash + merge then fix(functions) :: don't use macro to import and build SqlPageFunctionName will also be ignored