Daniel Sharifi

Add type alias for unsigned integer gauge

1

This PR exports a type of gauge for `AtomicU64`. This is convenient when dealing with metrics that are of type `u64`.

feat(sync-call): [IC-1666] Endpoint for synchronous call requests

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As part of [IC-1666](https://dfinity.atlassian.net/browse/IC-1666) the proposal introduces a new HTTPS endpoint for synchronous update calls, or "call and await", where users can send call requests to the replica and get...

# Description Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. Fixes # (issue) # How Has This Been Tested?...

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# Description This PR enables the HTTP2 feature the reqwest transport by enabling the `http2` feature flag for for the reqwest dependency. # How Has This Been Tested? Tested in...