fix(ext/node): represent sqlite blob as Uint8Array

[littledivy]

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[jimmywarting]

Uhm, why represent blob as Uint8Array instead of an actual Blob?

You could store some large binary in sqlite, and when you retrieve it it would just be a Blob whose data is backed up by the filesystem (database) with a pointer to the location where the data is stored (with a potential size & offset)

You could do so much more with a Blob

• it can be piped instead of being held in memory blob.stream()
• if you actually want ArrayBuffer or Uint8Array then you can do blob.bytes() || blob.arrayBuffer()

https://chromium.googlesource.com/chromium/src/+/HEAD/storage/browser/blob/README.md

[littledivy]

This change is for node:sqlite so it does what Node.js does - https://nodejs.org/api/sqlite.html#type-conversion-between-javascript-and-sqlite