feat: user selectable csv delimiter

[AyushAgrawal-A2]

ref: https://github.com/quadratichq/quadratic/issues/1965

Changes:

• Show a Import settings modal, asking for csv delimiter, if imported / dropped files has a csv file. Same delimiter is used for all files.

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated (UTC)
quadratic	✅ Ready (Inspect)	Visit Preview	Nov 6, 2024 1:43am

[qa-wolf[bot]]

QA Wolf here! As you write new code it's important that your test coverage is keeping up. Click here to request test coverage for this PR!

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 39.59538% with 209 lines in your changes missing coverage. Please review.

Project coverage is 90.71%. Comparing base (abe2883) to head (39b9798). Report is 329 commits behind head on data-tables-v1.

Files with missing lines	Patch %	Lines
quadratic-rust-shared/src/storage/file_system.rs	0.00%	53 Missing :warning:
quadratic-rust-shared/src/crypto/aes_cbc.rs	0.00%	31 Missing :warning:
quadratic-rust-shared/src/storage/s3.rs	0.00%	31 Missing :warning:
quadratic-rust-shared/src/storage/mod.rs	0.00%	26 Missing :warning:
quadratic-rust-shared/src/sql/mssql_connection.rs	0.00%	16 Missing :warning:
...adratic-rust-shared/src/sql/postgres_connection.rs	0.00%	9 Missing :warning:
quadratic-core/src/controller/operations/import.rs	91.66%	8 Missing :warning:
quadratic-rust-shared/src/error.rs	0.00%	8 Missing :warning:
quadratic-rust-shared/src/sql/mysql_connection.rs	0.00%	8 Missing :warning:
...dratic-rust-shared/src/sql/snowflake_connection.rs	0.00%	6 Missing :warning:
... and 9 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## data-tables-v1 #1975 +/- ## ================================================== - Coverage 90.96% 90.71% -0.25% ================================================== Files 250 260 +10 Lines 56531 56796 +265 ================================================== + Hits 51422 51523 +101 - Misses 5109 5273 +164 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

---

🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests

[AyushAgrawal-A2]

Any opposition to bringing in these changes?

nope, also you don't need to ask