make allure more easily available for java execution

[maxandersen]

Hi,

I was looking for ways to easily render junit reports when using jbang to run unittests - I was happy to find allure; even happier to discover its all just a java project meaning I could make it super easy to install.

Initially i just did jbang io.qameta.allure:allure-commandline:RELEASE but then i realized none of the plugins specfically the junit xml parsers was being picked up. Thus I had to do it slightly differently.

What I've done is that if you are user you now just need to install https://jbang.dev and you can do:

jbang app install allure@jbanghub/allure

from then on allure is in your path and you can run it.

You can also just run it as jbang allure@jbanghub/allure ... and not require installing it.

This will work from any where you can run java (jbang will reuse your java runtime/sdk or get one when/if you need so).

The "magic" is in https://github.com/jbanghub/allure - where I made a script: https://github.com/jbanghub/allure/blob/main/allure.java which mimicks what already happens when you use maven plugin and download allure distro when/if needed.

Right now that code is more a proof of concept - and I used jbang itself to implement it which is probably overkill - but it works.

Now:

1. would you be interested in this?
   I think it would be awesome if there was a install option that works on any platform anywhere described on https://allurereport.org/docs/install/
2. if yes, I can contribute it to https://github.com/allure-framework/jbang-catalog, then it would be jbang allure@allure-framework instead.

[maxandersen]

p.s. right now this allure.java is in a jbang script - but we could also just make it part of the command-line jar itself.