* feat(core): Default encoding/decoding limits
This PR adds new defaults for both client and server max
encoding/decoding message size limits. By default, the max message
decoding size is `4MB` and the max message encoding size is
`usize::MAX`.
This is follow up work from https://github.com/hyperium/tonic/pull/1274
BREAKING: Default max message encoding/decoding limits
* update generated code
* tonic-health: commit generated code rather than generating at build time
This saves users from needing protoc available on their path if they're not
generating other tonic code at build time, either.
The generated modules can be regenerated by enabling the `gen-proto`
feature, which will trigger the relevant part of the build script.
* Check generated code for tonic-health matches in CI
* Use bootstrap test to generate/check validity of generated code
As suggested by @LucioFranco in https://github.com/hyperium/tonic/pull/1065\#discussion_r951580189.
This avoids the need for a feature which would show
up in docs.rs, and achieves the same goals via CI.
