Fix code safety issues and sync plugin submodules

[linmajia]

Description

This PR applies code hygiene and correctness fixes across rDSN, then updates all plugin submodules to their latest master commits after their corresponding PRs were merged.

Changes

• Add .gitattributes to normalize line-ending behavior.
• Ensure affected source/config files end with a newline.
• Remove trailing whitespace from selected rDSN files.
• Update plugin submodule pointers for whitespace-cleanup fixes.
• Fix high-signal runtime safety issues, including stale index handling and divide-by-zero risk.
• Fix printf-style logging/assert format issues, including:
  • missing or extra logging arguments,
  • size_t values printed with %zu,
  • signed int32_t gpid values printed with %d.
• Update all plugin submodules to latest master:
  • rDSN.tools.explorer
  • rDSN.tools.hpc
  • rDSN.dist.service
  • rDSN.dist.deployment
  • rDSN.tools.log.monitor