Track v4 usage

[paulmillr]

It would be useful to understand adoption of v4.

Current downloads: https://www.npmjs.com/package/chokidar?activeTab=versions

How downloads looked before v4 release:

[
{"v": "3.6.0", "dl": 21914816},
{"v": "3.5.3", "dl": 15435008},
{"v": "3.5.2", "dl": 1642570},
{"v": "3.5.1", "dl": 1429788},
{"v": "3.5.0", "dl": 45931},
{"v": "3.4.3", "dl": 353360},
{"v": "3.4.2", "dl": 184345},
{"v": "3.4.1", "dl": 68653},
{"v": "3.4.0", "dl": 222643},
{"v": "3.3.1", "dl": 625801},
{"v": "3.3.0", "dl": 291998},
{"v": "3.2.3", "dl": 2071},
{"v": "3.2.2", "dl": 2709},
{"v": "3.2.1", "dl": 10108},
{"v": "3.2.0", "dl": 1149},
{"v": "3.1.1", "dl": 6921},
{"v": "3.1.0", "dl": 1426},
{"v": "2.1.8", "dl": 6229584},
{"v": "3.0.2", "dl": 31580},
{"v": "3.0.1", "dl": 3181},
{"v": "2.1.6", "dl": 117186},
{"v": "3.0.0", "dl": 1314},
{"v": "2.1.5", "dl": 54103},
{"v": "2.1.4", "dl": 1032},
{"v": "2.1.3", "dl": 6},
{"v": "2.1.2", "dl": 32118},
{"v": "2.1.1", "dl": 6880},
{"v": "2.1.0", "dl": 3204},
{"v": "2.0.4", "dl": 201535},
{"v": "2.0.3", "dl": 31451},
{"v": "2.0.2", "dl": 5558},
{"v": "2.0.1", "dl": 3707},
{"v": "2.0.0", "dl": 2715},
{"v": "1.7.0", "dl": 1065351}
]

[43081j]

a bunch of the e18e community have been working pretty hard to upgrade high impact projects etc, but its a slow job

quite a few projects were blocked until they could continue supporting globs too. but with the release of tinyglobby, thats a lot easier now (to just pass tinyglobby globs into chokidar)

[paulmillr]

@43081j what do we need to do for v5 release with version bump, since matrix changes have been merged?

[43081j]

i think given its pretty much only the ESM only change (incl. the engine constraint bump), we just need to update the docs

we should note in the README that its ESM only, though in node 20 and above you can require(esm).