Add direction to dynamic_macro_record_start_user

[joh]

This provides a means for user code to know which macro is being recorded, e.g., to display different indicators on an OLED.

Adds a direction argument to dynamic_macro_record_start_user(), just like the other dynamic_macro_*_user() functions.

Description

Change void dynamic_macro_record_start_user(void) to void dynamic_macro_record_start_user(int8_t direction).
direction is either +1 or -1 to indicate which dynamic macro is being recorded, making it similar to the other dynamic_macro_*_user() functions (which already take a direction).

Updated keyboard code with the new function signatures, as well as the documentation.

I did not touch the deprecated quantum/dynamic_macro.h which has a very different API.

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout/userspace (addition or update)
• Documentation

Issues Fixed or Closed by This PR

None

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[joh]

QMK CI Build failed for some keyboards, but all the errors seem unrelated to this PR.