VersionLocalState in sync with VersionSummary + Activation/Deactivation timestamps (#585)

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SDK teams before merging! This is why the number of required approvals
is "2" and not "1"--two reviewers from the same team is NOT sufficient.
If your PR is not approved by someone in BOTH teams, it may be summarily
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<!-- Describe what has changed in this PR -->
**What changed?**
- Added two new timestamps to signify when a version first/last receives
traffic in the `WorkerDeploymentVersionInfo` and `WorkerDeploymentInfo`.
Added missing fields from VersionLocalState that were not present in
VersionSummary.

<!-- Tell your future self why have you made these changes -->
**Why?**
- Adding the two new timestamps shall allow operators to have more
visibility into when a version gets activated/deactivated.
- The reason fields from `VersionLocalState` were added to the
`VersionSummary` is because the UI, right now, is querying a bunch of
different places to get information about a specific version. This might
be annoying and the aim of this PR is to make VersionSummary the source
of truth for information related to a specific version. A nice cherry on
top is that this shall also reduce the number of API calls to get
information about a version.

<!-- Are there any breaking changes on binary or code level? -->
**Breaking changes**
- None

<!-- If this breaks the Server, please provide the Server PR to merge
right after this PR was merged. -->
**Server PR**
- temporalio/temporal#7736)

Author: Shivs11