Allow flags in deno.json

[franz101]

First of all congrats to the launch. Migration to 2.x was seamless
Current setup

{
    "unstable": ["net"],
    "tasks": {
        "dev": "deno --allow-env  --allow-run  --allow-read --allow-net --env main.ts"
    },
}

Is it possible to run it like the following?

{
    "unstable": ["net"],
    "tasks": {
        "dev": "deno --env main.ts"
    },
    "allow" : ["read","env","net"]
}

[yazan-abdalrahman]

@lucacasonato @bartlomieju

it suggestion
Can I work on this?

[lucacasonato]

Duplicate of #12763