Missing BaseService

[johndpope]

The generic axios code generator by openapi spits out these two files

https://gist.github.com/johndpope/6b08cad61a0ac69f3590beae82fe304a

perhaps this could be used for BaseService ?

Related
https://github.com/OpenAPITools/openapi-generator/tree/master/samples/client/petstore/typescript-axios/builds/with-npm-version