chore(ibis): improve the date add/sub function for snowflake

[goldmedal]

Add the datetime addition/subtraction functions to the function list of snowfalke

• dateadd
• datediff
• timediff
• timestampadd
• timestampdiff

Summary by CodeRabbit

• New Features

  • Snowflake connector now exposes three additional functions in the function catalog, expanding available operations visible in the /functions endpoint and for query building.

• Tests

  • Updated expectations to reflect the increased function count when using the remote function list configuration for Snowflake, ensuring test coverage aligns with the expanded catalog.

[coderabbitai]

Walkthrough

Adjusts a Snowflake connector v3 test to expect three additional functions in the /functions API response when a remote function list is configured; no other logic changes.

Changes

Cohort / File(s)	Summary of changes
Tests – Snowflake Connector v3 ibis-server/tests/routers/v3/connector/snowflake/test_functions.py	Updated expected count in test_function_list from DATAFUSION_FUNCTION_COUNT + 60 to + 63; no other assertions or logic modified.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Suggested labels

ibis, python

Suggested reviewers

• douenergy

Poem

I twitch my nose at functions three,
New snowflakes drifting silently.
Count them once, then count them thrice—
Tests now match the frosty slice.
In winter’s code, I hop with glee,
For every plus adds harmony. 🐇❄️

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[coderabbitai]

Actionable comments posted: 1

📜 Review details

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Plan: Pro

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📥 Commits

Reviewing files that changed from the base of the PR and between 82174fa and a1a0b03.

⛔ Files ignored due to path filters (1)

• ibis-server/resources/function_list/snowflake.csv is excluded by !**/*.csv

📒 Files selected for processing (1)

• ibis-server/tests/routers/v3/connector/snowflake/test_functions.py (1 hunks)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)

• GitHub Check: ci