Added the SymlinkTextInputFormat manifest generation for Presto/Athena support #250
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This PR is the first in the sequence of PRs to add manifest file generation (SymlinkInputFormat) to OSS Delta for Presto/Athena read support (issue #76). Specifically, this PR adds the core functionality for manifest generation and rigorous tests to verify the contents of the manifest. Future PRs will add the public APIs for on-demand generation.
Added post-commit hooks to run tasks after a successful commit.
Added GenerateSymlinkManifest implementation of post-commit hook to generate the manifests.
Co-authored-by: Tathagata Das tathagata.das1565@gmail.com
Co-authored-by: Rahul Mahadev rahul.mahadev@databricks.com