refactor(shapes)!: remove devs shapes; update standard shapes

[kumilingus]

Description

This is the second PR that removes shapes from joint-core (See #2422).

Completely removing legacy shapes from the joint-core package.

• devs were removed from joint-core and are implemented only as custom shapes within the demos.

Migration guide

You can copy the shape definition from v3.7 directly to your application.
Here are examples: devs

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The PR also updates the standard shapes not to use legacy attributes such as refWidth, refHeight, refX, refY, etc.
and use native SVG attributes with calc expressions.

For instance refWidth: 100%; is replaced with width: 'calc(w)'.

If you change these values in your application (e.g. by changing the refD attribute of the path or changing the position of the label using refY), this is another breaking change.

Migration guide

• a. You can copy the shape definition from v3.7 directly to your application and override the built-in ones.
• b. You need to switch from ref* attributes to native attributes in your code and you might also need to change the attributes in any JSON you try to import (should the JSON contain modified standard shapes ref* attributes).