feat(file): add support v1beta1

Create, Read and Update function

Delete Methode

add tests

fix date issue and register cassettes

test: add validation for filesystem size granularity

fix: convertion

fix(instance): update schema filesystem

test(instance): add test attach filesystem

feat(instance): delete and update filesystem

chore: master sdk-go

go mod tidy

update doc and tests

fix fmt

update go.mod

fix(file): rename attribut size to size_in_gb

fix: error return attachFS and typo doc

fix: error return attachFS and typo doc

update FileSystem Size to GB

update FileSystem Size to GB

refacto waiter

tests: fix test and add waiter