airstore next: bundle V4: thrift working in OSS build

[codyohl]

Summary: this diff adds support for thrift in the OSS client build. it changes the getdeps airstore manifest to gain access to the thrift cpp2 compiler, then uses a rule similar to other projects to generate the cpp type headers. It changes the OSS libbundle library to depend on the thrift types introduced in D56578073 (and, through a lot of pain, get generated in the OSS build stack) which will then be used to ser/de bundles in the OSS build later in the stack!

Differential Revision: D56578071