Added unit tests for error handling

[chrischtel]

TL;DR

Added network output handler with test coverage for initialization and deinitialization

What changed?

• Added network module export in nexlog.zig
• Implemented test case for NetworkHandler initialization in network.zig
• Created new network_tests.zig file with comprehensive handler testing
• Added validation for endpoint configuration and buffer initialization

How to test?

1. Run the test suite using zig test
2. Verify NetworkHandler initialization with example.com:8080
3. Check buffer size and endpoint configuration assertions
4. Confirm proper deinitialization of resources

Why make this change?

To ensure the network output handler is properly tested and validated, providing confidence in its initialization, configuration handling, and resource management. This is crucial for maintaining reliability when sending logs over network connections.

[chrischtel]

• Commented patter analysis tests / will be removed shortly #17
• Added unit tests for error handling #16 👈 (View in Graphite)
• Improved Error Handling for network handler #15
• develop

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[chrischtel]

Merge activity

• Jan 29, 10:43 AM EST: A user started a stack merge that includes this pull request via Graphite.
• Jan 29, 10:46 AM EST: Graphite rebased this pull request as part of a merge.
• Jan 29, 10:48 AM EST: A user merged this pull request with Graphite.