Wiki : Update Coding Style Page

[al-fisher]

As discussed on call - need to update the https://github.com/BHoM/documentation/wiki/Coding-Style including latest conventions and as suggested, list of Do's and Dont's potentially pointing to more details and hyperlinks on other pages etc. as needed

Assigning to @adecler to update to latest conventions from framework perspective - for then perhaps @FraserGreenroyd @IsakNaslundBh @alelom all to then add more details and review