Secure ZnDraw connection

[PythonFZ]

ZnDraw/zndraw/static/World/systems/select.js

Lines 308 to 316 in c970fda

	this.socket.emit("modifier:run", {
	name: "zndraw.modify.Delete",
	params: {},
	atoms: this.cache.get(this.world.getStep()),
	selection: this.world.getSelection(),
	step: this.world.getStep(),
	points,
	segments,
	url: window.location.href,

Only submit:

• name
• params
• step?

atoms, selection, segments, url can be retreived in other ways.

• check that the scene loads succesfully
• opening a window multiple times will duplicate the e.g. selection menu
• local applications might not want to use a token, e.g. running it locally the uuid should maybe default to None / make CLI option.
• selection / change frame could also be a message distributed to all other windows.

[codecov-commenter]

Codecov Report

Merging #230 (f5d5f46) into main (33d1316) will decrease coverage by 7.42%.
The diff coverage is 27.25%.

@@            Coverage Diff             @@
##             main     #230      +/-   ##
==========================================
- Coverage   48.75%   41.34%   -7.42%     
==========================================
  Files           7       13       +6     
  Lines         281     1028     +747     
==========================================
+ Hits          137      425     +288     
- Misses        144      603     +459     

Files	Coverage Δ
tests/conftest.py	77.77% <80.00%> (-2.23%)	⬇️
zndraw/modify/__init__.py	43.44% <50.00%> (ø)
zndraw/settings.py	42.37% <50.00%> (ø)
zndraw/utils.py	31.25% <33.33%> (ø)
zndraw/analyse/__init__.py	26.66% <40.00%> (ø)
tests/test_zndraw.py	26.66% <26.66%> (ø)
zndraw/zndraw.py	28.37% <25.56%> (-2.45%)	⬇️

... and 2 files with indirect coverage changes

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