Add wildcard (*) support for include_ext to watch all file extensions

[Copilot]

• [x] Understand the issue: users want include_ext = ["*"] to watch all file extensions
• [x] Understand the concern: need to exclude the binary file (e.g., tmp/main) when using wildcard
• [x] Explore codebase to understand file extension filtering logic
• [x] Implement wildcard (*) support in isIncludeExt function
• [x] Add isBinPath helper function to check if a file is the binary
• [x] Ensure binary file is excluded when using wildcard to avoid reloading on binary creation
• [x] Add tests for wildcard extension support
• [x] Add test coverage for all isBinPath return cases (including empty binPath)
• [x] Extract * to extWildcard constant for better code maintainability
• [x] Update documentation in air_example.toml
• [x] Run tests to validate changes
• [x] Request code review
• [x] Run security scan (no vulnerabilities found)

Original prompt

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This section details on the original issue you should resolve

<issue_title>How to reload on all file extensions?</issue_title> <issue_description>Hi, Is there a wildcard that allows every file extension? include_ext = ["*"] does not work for me, and removing it only allows Go files.

I work with different file types that may change over time, so I don't want to have to edit the configuration file every time. When I use a wildcard, I can also copy the air toml config to new projects without having to change them.

🤟 </issue_description>

<agent_instructions>but also need to handle the creation of the bin file.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@xiantang Yes, but I'm worried that when I add *, it will also watch when tmp/main is created

• Fixes air-verse/air#830

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[codecov[bot]]

Codecov Report

:x: Patch coverage is 69.23077% with 4 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
runner/util.go	69.23%	2 Missing and 2 partials :warning:

Files with missing lines	Coverage Δ
runner/util.go	79.65% <69.23%> (-0.49%)	:arrow_down:

... and 2 files with indirect coverage changes

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[xiantang]

also cover test for isBinPath return cases @copilot

[Copilot]

also cover test for isBinPath return cases @copilot

Added TestIsBinPathEmptyBinPath test case to cover the empty binPath return case (d1a216f). The test verifies that isBinPath returns false when no entrypoint is configured.