[deno] Detect direct imports

[prabhu]

Deno seems to encourage golang style imports of http and jsr packages. These currently would not be reported by cdxgen.

import { VERSION } from "https://deno.land/std/version.ts";

import { parse, stringify } from "jsr:@std/toml";

import { Client } from "https://deno.land/x/[email protected]/mod.ts";

Blocked by

https://github.com/package-url/purl-spec/issues/302