feat!: release @launchdarkly/openfeature-js-server-common

[joker23]

This PR will release the openfeature-js-server-common package to npm at version 1. This package is not meant to be used directly, but rather as a shared package that is used by sdks. All this to say, publishing this package is effectively a NOOP.

We just want to make sure this package publishes before we publish openfeature-node-server

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Note

Low Risk
Changes are release automation, docs, and dev tooling; no application/runtime logic in the diff for a package not intended for direct consumption.

Overview
Prepares @launchdarkly/openfeature-js-server-common for its first stable npm release at 1.0.0, moving off prerelease (release-as / manifest 0.1.3 → 1.0.0) so it can publish before openfeature-node-server.

Adds dedicated CI (openfeature-server-common.yaml, Node 20/22) and wires the package into release-please (manual dispatch option, release output, and a release-openfeature-server-common full-release job). Root README and CONTRIBUTING now list the package with npm/CI/issue links; the package README drops the pre-release caution and points CI/docs badges at the new workflow and GitHub Pages API docs.

In the package itself: typedoc.json for API docs, ESLint 9 flat-config style devDependencies (replacing ESLint 8 / prettier-eslint stack), and a simplified lint script.

^{Reviewed by Cursor Bugbot for commit 6a71fad. Bugbot is set up for automated code reviews on this repo. Configure here.}

[github-actions]

@launchdarkly/js-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 26365 bytes
Compressed size limit: 29000
Uncompressed size: 129044 bytes

[github-actions]

@launchdarkly/js-client-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 38739 bytes
Compressed size limit: 39000
Uncompressed size: 212244 bytes

[github-actions]

@launchdarkly/browser size report
This is the brotli compressed size of the ESM build.
Compressed size: 179579 bytes
Compressed size limit: 200000
Uncompressed size: 831422 bytes

[github-actions]

@launchdarkly/js-client-sdk size report
This is the brotli compressed size of the ESM build.
Compressed size: 31978 bytes
Compressed size limit: 34000
Uncompressed size: 114243 bytes

[devin-ai-integration]

Devin Review found 1 potential issue.

View 2 additional findings in Devin Review.

[devin-ai-integration]

🔴 Release-please manifest prematurely set to 1.0.0 will prevent automated 1.0.0 release

The .release-please-manifest.json was changed from "0.1.3" to "1.0.0" for packages/shared/openfeature-server-common, but this version has not actually been released — the package.json still says 0.1.3, the CHANGELOG only goes up to 0.1.3, and the latest git tag is openfeature-js-server-common-v0.1.3. The manifest records the last released version. Combined with "release-as": "1.0.0" in release-please-config.json:398, release-please will see the manifest already at 1.0.0 and believe this version was already released, so it will not create a release PR for 1.0.0. The package will remain stuck at 0.1.3 in the automated pipeline. The manifest should stay at "0.1.3" — release-please will then see the gap and use the release-as directive to produce a 1.0.0 release PR.

Suggested change

	"packages/shared/openfeature-server-common": "1.0.0",
	"packages/shared/openfeature-server-common": "0.1.3",

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