Flutter plugin depends on jq

[toineheuvelmans]

Describe the Bug

Attempting to install a version of Flutter fails due to missing command jq. Luckily asdf also has a plugin for jq, but I would expect plugin dependencies to be managed in some way.

Steps to Reproduce

$ asdf install flutter latest

Expected Behaviour

$ asdf install flutter latest

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 1121M  100 1121M    0     0  7402k      0  0:02:35  0:02:35 --:--:-- 8777k

Actual Behaviour

$ asdf install flutter latest

~/.asdf/plugins/flutter/bin/install: line 25: jq: command not found
~/.asdf/plugins/flutter/bin/install: line 26: jq: command not found
~/.asdf/plugins/flutter/bin/install: line 27: [: -gt: unary operator expected
Cannot find the download url for the version: 2.10.4-stable

Environment

MacOS 11.5.2

OS:
Darwin toines-mbp.home 20.6.0 Darwin Kernel Version 20.6.0: Wed Jun 23 00:26:31 PDT 2021; root:xnu-7195.141.2~5/RELEASE_X86_64 x86_64

SHELL:
zsh 5.8 (x86_64-apple-darwin20.0)

ASDF VERSION:
v0.9.0

ASDF ENVIRONMENT VARIABLES:
ASDF_DIR=/usr/local/opt/asdf/libexec

ASDF INSTALLED PLUGINS:
poetry                       https://github.com/asdf-community/asdf-poetry.git master 7ea77b0
python                       https://github.com/danhper/asdf-python.git master 57a4d72

[jthegedus]

Dependencies are user-managed, the Flutter plugin states that it uses jq, though not as clearly as it could. The issue of a clear dependency list should be raised in the Flutter plugin.