lang/nll: Update 20250805a => 20260110a

Changelog:

• Added the 5x5font.
• Added the basic color mode.
• Added the integer math functions.
• Much memory reduction measures.
• Many modifications for micro:bit.
• Some minimal corrections.

https://kozos.jp/nlux/download.html

• Improve port-install-* readability.
• Merge INSTALL_DATA in post-install-EXAMPLES-on.

PR: 292355