[WIP] sw package typechecks successfully and is typechecked in CI

[yuchiki]

fix #10329

What

• fix types of package/sw
• typecheck packages/sw in CI.

Why

• packages/sw is not typechecked now
• and packages/sw's type information goes obsolete

Additional info (optional)

N/A

Checklist

• Read the contribution guide
• [-] Test working in a local environment
  • all checks except for Test(backend) now succeed
    • Test(backend) is broken now in develop

[codecov]

Codecov Report

Merging #10331 (b6eb18b) into develop (a561b83) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop   #10331   +/-   ##
========================================
  Coverage    78.70%   78.70%           
========================================
  Files          161      161           
  Lines        19766    19766           
  Branches       332      332           
========================================
  Hits         15556    15556           
  Misses        4210     4210           

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[saschanaz]

misskey-dev/misskey.js#56 のマージを要求する隊

[tamaina]

🙏