Preview: Update Image object in KET file to support CDX/CDXML format about ketcher

[ivanmaslow]

Preview exploratory testing is completed on env with 5172-update-ket-image branch:

• Ketcher version: [Version 2.23.0-rc.3] Build at 2024-08-01; 08:58:34
• Indigo version: Version 1.23.0-dev.4.0-gb71e441d7-wasm32-wasm-clang-19.0.0
  Points below are covered:
• Json structure for images in .ket file was changed (example for .svg):

{
"root": {
"nodes": [
{
"type": "image",
"format": "image/svg+xml",
"boundingBox": {
"x": 18.424999999999997,
"y": -9.774999999999997,
"z": 0,
"width": 4.900000000000002,
"height": 4.775000000000006
},
"data": "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"
}
],
"connections": [],
"templates": []
}
}

• All scope of checks from previous tasks were retested successfully:
  #4911
  #4897

[Zhirnoff]

Tested.

Desktop:

• OS: Windows 11
• Browser Chrome
• Version 124.0.6367.79 (Official Build) (64-bit)

Ketcher version
[Version 2.24.0-rc.1]
Indigo version
[Version 1.23.0-rc.1]