feat(io): add rollingSize option to file sink

[e7217]

Hello,

Description

Adds support for file rolling based on file size in the file sink. This allows users to rotate files when they reach a specified size threshold, in addition to the existing time-based and count-based rolling options.

Motivation

Currently, the file sink only supports rolling by:

• Time interval (rollingInterval)
• Number of records (rollingCount)

However, users may want to limit file sizes to prevent excessively large files, which is a common requirement for log rotation and file management systems.

Example Configuration

{
  "file": {
    "path": "/data/logs/app.log",
    "rollingSize": 10485760,  // 10MB
    "rollingCount": 0,
    "rollingInterval": 0
  }
}

Thank you for making such a lightweight tool.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.46%. Comparing base (8a59ad3) to head (8b5563d).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3910      +/-   ##
==========================================
+ Coverage   71.42%   71.46%   +0.04%     
==========================================
  Files         453      453              
  Lines       51923    51936      +13     
==========================================
+ Hits        37082    37114      +32     
+ Misses      11942    11927      -15     
+ Partials     2899     2895       -4     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[ngjaying]

LGTM! This looks good and aligns perfectly with our roadmap.