Support TS v6

[ocavue]

TypeScript v6 has been out for a while, but the package precinct still depends on "typescript": "^5.9.3". This requires our project to install both TS v5 and TS v6 simultaneously.

It appears that some upstream projects, such as detective-typescript, have already updated their peer dependency range to support both TS v5 and v6.

I'm wondering if it would be possible to update the package precinct to use "typescript": "^5.9.3 || ^6.0.2" as a dependency, or set typescript as a peer dependency as previously discussed at #136.

[XhmikosR]

Please be patient, I'm not done with major changes like dropping support for old Node.js versions and switching to ESM across all dependents repos. So, I don't know when this will land #152 .

[XhmikosR]

I think I've done most of the work in all subpackages, but I could certainly use another pair of eyes... Basically I have created a xmr/dev branch in all repos with the Node.js < 20 drop, switch to ESM and any other breaking changes.