Add pom to build updatesite

[ingomohr]

• I used the Tycho tutorial as template
  • https://www.vogella.com/tutorials/EclipseTycho/article.html#using-maven-tycho-to-build-eclipse-components
• I used POMless build - so we don't need to add a pom.xmlto every project
• To make building work I had to rename the projects for the bundle/plugin and the feature.
  • With the old project names I could not make the build pass
• I (2nd commit) also added a ymlscript to have Github automatically build the updatesite on every push to the Git repo.

Local Test

I installed the feature from the locally built updatesite. The theme looks as before to me. Maybe you could doublecheck.

Thoughts

I think the product and the Export folder could be removed (later).
Maybe there's a way to establish all versions as Composite Updatesite via Github Actions (I didn't yet check that out, though),

Note I'm looking forward to any review feedback. :) Maybe you find something to be improved, as well. :)

[AObuchow]

Everything works perfectly :) See minor comments inline.

Realistically, this is good to merge IMO (I could address the comments myself).
Amazing work @ingomohr !

[AObuchow]

Could you change the label to Modern Dark Theme so that it looks a bit nicer in the software install wizard? :)

[ingomohr]

renamed

[AObuchow]

It might be worth including the product as a module to build, as I recently found out you can use a .product to configure Eclipse Preferences (currently, all preferences are set in CSS).

If we decide to include the product, it's feature needs to be updated to aobuchow.themes.moderndark.feature

However, I think this could be for a future PR :) It's not a requirement for this to get merged.

[ingomohr]

added product

[ingomohr]

The built product won't start on my machine (MacOS Catalina). Did it start on yours before?
I checked it against https://github.com/vogellacompany/rcpdemo/tree/master/com.vogella.tasks.product but that one also doesn't after I built it w/ Maven.
Maybe I'm missing something...?

[AObuchow]

No worries, I'll look into it or make a bug about it at least.

[vogella]

For testing I recommend to use https://github.com/vogellacompany/tycho-example

[AObuchow]

* I used the Tycho tutorial as template
  
  * https://www.vogella.com/tutorials/EclipseTycho/article.html#using-maven-tycho-to-build-eclipse-components

Great resource :D @vogella

* I (2nd commit) also added a `yml`script to have Github automatically build the updatesite on every push to the Git repo.

I haven't tested this but it looks sane to me :)

Thoughts

I think the product and the Export folder could be removed (later).

The Export folder can definitely be removed. I might want to keep the product folder.

Maybe there's a way to establish all versions as Composite Updatesite via Github Actions (I didn't yet check that out, though),

This is a very interesting idea, I'll have to look into it.
@PyvesB comment here might be relevant/interesting. I'm planning to do something similar.

Note I'm looking forward to any review feedback. :) Maybe you find something to be improved, as well. :)

It was a challenge for me to find something that could be improved in this PR ;)

[AObuchow]

Looks good to me! Merging.

Amazing first PR @ingomohr, very grateful for the work you did here :)