String.go

Added new constants, improved converters, Fixed newline build on unix systems, improved bool test compare, added new compare case for NotEqual

Closes #25, #26, #27, #28

## Introduction

Added new constants, improved converters, Fixed newline build on unix systems, improved bool test compare, added new compare case for NotEqual, refactored filemodes to osfilemode

Note: [Template Reference](https://hackmd.io/@akarimevatix/H1Qsmq23w)

## Worked on Items

- [x] #25 - Fixed newline issue for unix systems
- [x] #26 - Improved bool tests print
- [x] #27 - Add compare case for NotEqual
- [x] #28 - refactored filemodes to osfilemode

## TODOs

- NA

## References

- N/A

## Notes

- N/A

See merge request !41