Add unit tests for RDKLOG_FORMAT_WITH_TID and RDKLOG_FORMAT_WITH_TS_TID formats

[Copilot]

Adds test coverage for the RDKLOG_FORMAT_WITH_TID and RDKLOG_FORMAT_WITH_TS_TID log formats, which were previously untested in the rotation test suite.

Changes

• FormatWithTID test: Verifies log rotation behavior with thread ID format
• FormatWithTSTID test: Verifies log rotation behavior with timestamp + thread ID format
• Both tests follow existing patterns from RDKLOG_FORMAT_WITH_TS tests, validating:
  • Successful logger initialization with the format
  • Correct file rotation on size limit breach
  • File count limits are enforced

TEST_F(RDKLoggerRotationTest, FormatWithTID) {
    RUN_IN_FORK({
        rdk_LogOutput_File testPolicy;
        // ... configure policy ...
        config.format = RDKLOG_FORMAT_WITH_TID;
        rdk_Error ret = rdk_logger_ext_init(&config);
        ASSERT_EQ(ret, RDK_SUCCESS);
        // ... verify rotation behavior ...
    });
}

Also added .gitignore for autotools build artifacts.

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