Right now the code is in go lang and only support SHA256, add more algorithms support on a parameter basis.

Right now the pkce will be generated using SHA256, add option to pass the hash method name as an argument.

Need to add a folder for NodeJs and add the logic for node js to generate PKCE code_verifier and code_challenge.

Get the reference for Nodejs logic from my PKCE blog https://www.loginradius.com/engineering/blog/pkce/

Node js code is available in the branch, add the step by step document for node js and refer the link in the Readme.md file with node js heading.

Golang pkce code is there so update the readme file with guidelines to use in go.

Contributing.md file needs changes so that anyone can easily set this on his system i can do this if you assign this issue to me

Support PKCE code_verifier and code_challenge for python

Support PKCE code_verifier and code_challenge for Dot Net

Fix Nodejs Crypto support disabled issue

Structure the code so we can support multiple tech stacks

Create folders with multiple tech stack names, i.e Golang, Node, Php, Python, etc.
Goland code is in the main file so need to separate the logic and main file and move into the Golang folder.