feat!: resume standardise validate TDE-710

[paulfouquet]

Allows standardise_validate.py to be resumed using the same target (output directory) after a failure in order to avoid re-process the entire source.

Changes

• ⚠️ Takes a target directory/s3 path as argument where the output files (TIFFS and STAC metadata .json) will be saved
• verify that the target exists to enter in the "resume" mode
• if "resume" mode, both STAC and TIFF files existance are check:
  • if STAC exists, the TIFF is considered to exists too and the source file will be ignored (not processed)
  • if STAC does not exists but TIFF exists, the TIFF will be validated (Non Visual QA) and its STAC metadata created

NOTE: Draft PR to modify the standardising Argo Workflow: linz/topo-workflows#123

Tests

Test Argo Workflows: https://argo.linzaccess.com/workflows/argo/test-imagery-standardising-resume-gt8wr?tab=workflow