Enhancement: Add environment variable to set the kpm output information level.

[Rohanraj123]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

fix #124

2. What is the scope of this PR (e.g. component or file name):

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Other

Description:
This PR improves the logging mechanism in the KPM package manager by replacing the use of os.Stdin for logging with a custom LogWriter implementation. The changes aim to provide better control over log levels (info and debug) and enhance the maintainability and flexibility of the logging system.

Key Changes:
Custom LogWriter:

Introduced a new LogWriter struct that implements the io.Writer interface.
Supports log levels (info and debug), configurable via the environment variable KPM_LOG_LEVEL.
Defaults to info level if no environment variable is set.
Enhanced KpmClient Logging:

Replaced os.Stdin with logger.NewLogWriter() for the logWriter in KpmClient.
Added a WriteLog method in KpmClient to standardize logging throughout the application.
Modified main.go Initialization:

Updated the main.go file to use kpmcli.WriteLog for logging initialization errors instead of reporter.Fatal.
Event Logging:

Added the ability to log diagnostic messages via the KpmEvent struct, which integrates with the updated KpmClient.
Why These Changes Were Made:
The previous logging mechanism lacked flexibility and log-level filtering, leading to noisy logs in production environments.
The new LogWriter provides a clean and extensible logging interface, making it easier to maintain and debug.
Replacing reporter.Fatal() ensures uniform logging and simplifies the codebase by consolidating logging logic into KpmClient.
How It Works:
The log level can be set via the KPM_LOG_LEVEL environment variable (info or debug).
Logs are written to stdout with appropriate prefixes ([INFO] or [DEBUG]).
Critical errors can still be handled by extending WriteLog to support fatal errors if necessary.
Future Improvements:
Add more log levels (e.g., warn, error, fatal) for greater logging granularity.
Consider reintroducing reporter.Fatal() or adding equivalent behavior for handling critical errors.
Testing:
Verified logs are written to stdout with appropriate prefixes and log levels.
Tested info and debug logging in different environments by setting the KPM_LOG_LEVEL variable.
Ensured no runtime errors during client initialization and command execution.
Impact:
Improves log readability and debugging.
Provides a scalable foundation for future enhancements to logging functionality.

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other

[Peefy]

Hello @Rohanraj123

Thanks for the contribution. We can remove the empty file in the PR pkg/checker/scripts/registry_auth/htpasswd and fix the unit test CI issue.

[Rohanraj123]

Hey @Peefy , I have removed the empty file. Can you please review the PR.

[coveralls]

Pull Request Test Coverage Report for Build 12803314730

Details

• 12 of 26 (46.15%) changed or added relevant lines in 3 files are covered.
• 6 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.06%) to 41.968%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/logger/logwriter.go	11	13	84.62%
pkg/client/client.go	1	7	14.29%
pkg/event/event.go	0	6	0.0%

Files with Coverage Reduction	New Missed Lines	%
pkg/client/deperated.go	6	40.89%

Totals
Change from base Build 12760666391:	-0.06%
Covered Lines:	4172
Relevant Lines:	9941

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💛 - Coveralls