improv: HighPerfFractus (#10)

* Added some improvement to encoding

* did some good improvement encoding goes close to 0 allocs but above it when using some data type from which we can't avoid allocs like slice

* adding utils edits

* made huge improvement:
*decide to change from storing offset of var to linear ready cause this saves us trouble and is easier
- errors can be detected early on
- encoding format is now consistent
- expected size is exactly as you expect it
- encoding went to around 1 allocs/ op which is big progress
- e-ncoding same struct twice gives us 0 allocs
To Do:
-perform a complete migration from fractus to HighPerfFractus Maybe keeping the naming as fractus
- Make naming consistent right now they are lot of test variables that are not needed
- format all files
- write a complete documentation for this version
- showcase improvement compared to previous versions
- Expose only functions that should be usable by user (eg; FixedSize -> fixedSize)
- Comment the code(at least critical part)
Achieve Goals:
- Allocs reduced greatly from around 20 to 0
- time taken reduce from 1000ns/op to 200ns/op or less

* added comments
fixed unsafe usage for encoding
added a test to compare result of unsafe and non-unsafe encodings
added comments related to possible merging

* Optimize memory allocation in Decode function and add tests for uint16 handling

* removed unused functions and completed unsafe implementation for other types

* improved fuzzing
added handling of empty strings

* formatted files
removed previous implementation
completed migration

Author: rawbytedev