Update data models

[CasperWA]

Two major fixes:

• Use only YAML files (closes #160).
• Remove dimensions/properties duplicates, keeping them only in dimensions (fixes #164, fixes #162).

Minor changes:

• Update dependency listing, ensuring the latest v0.3.x for otelib and v0.5.x for oteapi-core is installed (supporting pydantic v1), also use relative dependencies between extras.

[codecov-commenter]

Codecov Report

Merging #169 (4fbc7ba) into main (2f43b04) will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #169   +/-   ##
=======================================
  Coverage   76.19%   76.19%           
=======================================
  Files          15       15           
  Lines         605      605           
=======================================
  Hits          461      461           
  Misses        144      144           

Flag	Coverage Δ
linux	76.19% <100.00%> (ø)

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Files	Coverage Δ
oteapi_optimade/dlite/parse.py	72.09% <100.00%> (ø)