SNOW-1061616: Support for .snowignore File to Exclude Cache Files from `snow object stage copy` Command

Description

Description

When using the snow object stage copy command in the Snowflake CLI, it has been observed that unnecessary cache files are also being uploaded, which ideally should not be part of the staging process. This behavior can lead to clutter and potentially increased costs due to the storage of unwanted files.

Proposed Solution

Introduce support for a .snowignore file, similar in concept to .gitignore or .dockerignore, which would allow users to specify patterns for files and directories that should be excluded from uploads.

Request for Input

• Are there any existing workarounds to prevent specific files or directories from being uploaded that I might have missed?
• I would appreciate feedback on the proposed solution and any suggestions on the implementation approach.
• Additionally, I am willing to contribute to the implementation of this feature. Would it be acceptable for me to develop this functionality and submit a pull request?

Thank you for considering this enhancement to improve the Snowflake CLI experience.

Context

No response

Start by locating the implementation and tests for the snow object stage copy command. Review how it currently selects files for upload, then determine the intended .snowignore pattern behavior and add coverage for excluded cache files. Done means the command honors the documented ignore rules without uploading matching files.