BadUSB: Add Japanese (JIS) keyboard layout

[Ytz-Ichi]

What's new

• Add ja-JP.kl for the Japanese 109-key (JIS) keyboard layout.
• Extend the HID keyboard report descriptor (USB and BLE) so International1..5
  key codes (0x87-0x8B) reach the host. The previous USAGE_MAXIMUM of
  HID_KEYBOARD_APPLICATION (0x65) caused reports containing these keys to
  be dropped by the OS, so a layout-only change could not cover JIS. The new
  range is a strict superset of the previous one, so existing layouts are
  unaffected.

JIS layout uses International3 (yen key) for \ and |, and International1
(ro key) for _.

Verification

1. ./fbt firmware_all flash_usb to build and flash. The new layout is
   bundled with the resources.

2. In the BadUSB app, open the Config menu and select ja-JP as the layout.

3. On the host PC, switch the keyboard layout to Japanese (JIS) and open
   Notepad.

4. Run a BadUSB script that prints the printable ASCII range, e.g.:

   STRING ASCII test: !"#$%&'()*+,-./0123456789:;<=>?@ABCXYZabcxyz[\]^_`{|}~
   STRINGLN
   STRING Backslash and pipe: \\ ||
   

5. All characters should appear as typed. The previously broken set
   (\ | _ @ [ ] { } ` ~ ^ : " ') now
   produces the printed characters. \ renders as ¥ on Japanese Windows
   because of Shift-JIS font mapping; the byte sent is still ASCII 0x5C.

Checklist (For Reviewer)

• PR has description of feature/bug or link to Confluence/Jira task
• Description contains actions to verify feature/bugfix
• I've built this code, uploaded it to the device and verified feature/bugfix