feat: Added MD5 hashing algorithm (#1519)

* feat: Added MD5 hashing algorithm

* Added wiki link

* Remove spam?

* Fix extend towards end

* Return Uint32Array in MD5 function

* Preprocess function now works on uint arrays

* chunkify U32Array instead of string

* Remove all string related functions

* Replace typed arrays with named variables

* Fix "Replace typed arrays with named variables"

* Return Uint8 Array in MD5 function

The MD5 function now returns a uint8 array with the correct endianness.

* Add tests

* Fix docstrings

* Introduce hexMD5 function

* Change test string

* Format test file