[code-reflection] RFR: Shape auto-dimension calculation from data size

[Adam Sotona]

Implemented auto-dimension calculation from data size.

Shaped tensors construction required manual shape calculation based on the actual tensor data.
This patch allows to set one of the shape dimensions to -1 and its size is automatically calculated from the actual tensor data size.

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Commit messages:
 - Shape auto-dimension calculation from data size

Changes: https://git.openjdk.org/babylon/pull/347/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=347&range=00
  Stats: 32 lines in 2 files changed: 29 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/babylon/pull/347.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/347/head:pull/347

PR: https://git.openjdk.org/babylon/pull/347