Refactoring of the adapter template

[leecalcote]

Enhancement Description
To benefit from the practices of microservices kits like gokit.

// @kumarabd

[kumarabd]

@leecalcote I assume this is the repo that we are using currently for templates? https://github.com/layer5io/meshery-adapter-template
We need to create a repository for the gokit and meanwhile ill push in the docs for the new template design.

[iambami]

@kumarabd is there an update on this?