feat: import samples additional attributes - flash point and refractive index

[adambasha0]

• [ ] rather 1-story 1-commit than sub-atomic commits

• [x] commit title is meaningful => git history search

• [x] commit description is helpful => helps the reviewer to understand the changes

• [x] code is up-to-date with the latest developments of the target branch (rebased to it or whatever) => :fast_forward:-merge for linear history is favoured

• [x] added code is linted

• [x] tests are passing (at least locally): we still have some random test failure on CI. thinking of asking spec/examples.txt to be commited

• [ ] in case the changes are visible to the end-user,  video or screenshots should be added to the PR => helps with user testing

• [x] testing coverage improvement is improved.

• [ ] CHANGELOG :  add a bullet point on top (optional: reference to github issue/PR )

• [ ] parallele PR for documentation  on docusaurus  if the feature/fix is tagged for a release

[github-actions[bot]]

LCOV of commit f97123b during Continuous Integration #4003

Summary coverage rate:
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[github-actions[bot]]

LCOV of commit b1fe655 during Continuous Integration #4019

Summary coverage rate:
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[github-actions[bot]]

LCOV of commit 7734b77 during Continuous Integration #4028

Summary coverage rate:
  lines......: 65.6% (14128 of 21530 lines)
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[github-actions[bot]]

LCOV of commit f0f7636 during Continuous Integration #4108

Summary coverage rate:
  lines......: 65.6% (14120 of 21515 lines)
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[github-actions[bot]]

LCOV of commit 0c7a6b7 during Continuous Integration #4109

Summary coverage rate:
  lines......: 65.6% (14117 of 21511 lines)
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[adambasha0]

enhancement to import fields like Location, Melting Point, Boiling Point, flash point, refractive index, density, and molarity and chemical volume with units, and fix existing bugs.

[adambasha0]

Chemotion dev (12).webm

[github-actions[bot]]

LCOV of commit 485f974 during Continuous Integration #4115

Summary coverage rate:
  lines......: 65.6% (14117 of 21511 lines)
  functions..: no data found
  branches...: no data found

Files changed coverage rate: n/a

[github-actions[bot]]

LCOV of commit 17dda99 during Continuous Integration #4124

Summary coverage rate:
  lines......: 65.6% (14118 of 21510 lines)
  functions..: no data found
  branches...: no data found

Files changed coverage rate: n/a