Test example to demonstrate `taskrequires` regression in nimble >= 0.22.0

cli.nim

# Compiles with "nimble clitest" on nimble 0.20.1, but fails to install cligen with nimble 0.22.0+

import std/strformat

proc hello(name="Joe", args: seq[string]): int =
  ## Say hello
  echo &"Hello, {name}"
  result = 1
  
import cligen; dispatch hello

taskrequires.nimble

version       = "0.1.0"
author        = "Christopher Arndt"
description   = "Test taskrequires dependencies"
license       = "MIT"

# Dependencies

requires "nim >= 2.2.6"

taskrequires "clitest", "cligen"

task clitest, "Build CLI test":
  selfExec("compile cli.nim")