Adjusted the formatting of the README documentation file to enhance readability and content clarity. The modifications include structuring sentences into separate lines, delivering concise and clear information more efficiently.

The commit updates the formatting of several files for improved readability and also optimizes SVG graphics for faster load times. It primarily involves adding appropriate line breaks and spaces for clarity and enhancing readability in bug report template and the code of conduct. Optimization of SVGs results in more efficient loading and display of images.

Data types of 'code' fields in RevokingError and OnboardingError classes have been changed from strings to integers. This will streamline error handling and avoid potential type conversion errors. The default error code for unknown errors has also been updated from "UNKNOWN_ERROR" to -1.

Disabled two tests in the 'SendChunkedMessageTest' and 'SendChunkedMessageForSingleChunkTest' classes needing further investigation and attributed them to issues #197 and #198 respectively. Created 'SendChunkedMessageForSingleChunkTest' file. Changed the error code assertion from string to integer in 'OnboardingWithErrorMessageTest'.

Removed use of StandardCharsets.UTF_8 in EncodeMessageServiceImpl as the payloads were already in byte format. Eliminating this redundant encoding to UTF_8 from the payload improves efficiency and mitigates potential errors due to unnecessary conversion scenarios.