Include default client plugins (editing, qplotly, qtimeseries) as git submodules

[volterra79]

G3W-SUITE v3.5 already ships the following default plugins:

1. editing
2. qplotly
3. qtimeseries

Through the use of git submodules, this pull just makes sure that related source code is always present in the generated bundle.

[Raruto]

@volterra79 on which git version did you test the above commands?

[volterra79]

@Raruto git version 2.17.1

[Raruto]

I've read about different "default" behaviors depending on the installed version, actually mine are:

git version 2.39.0.windows.2 # windows 10
git version 2.34.1           # windows subsystem for linux (ubuntu jammy)

Just to know, have you already updated your git version to the latest available on your OS?

[volterra79]

@Raruto yes. I'm working on Ubuntu 18.04.6 LTS

[Raruto]

I feel like we're overcomplicating things here somehow.. (there would also be git-subtrees but I didn't go into details.)

At the moment, just to automate some steps, we could think of adding a npm task ("preinstall" or "prebuild", I don't know) that takes care of cloning all the necessary plugins and keeping there all these folders as separate repositories.

Also because, if you think about it, to generate a coherent bundle for us it would be enough to be sure that all the default src/plugins/**/plugin.js files are there (and not the entire git repository), i.e.:

• src/plugins/editing/plugin.js
• src/plugins/qplotly/plugin.js
• src/plugins/qtimeseries/plugin.js

I'll think about it again in the next few days and I'll let you know.