Add pulumi-squadcast to the registry

[IrisDande]

Description

Add pulumi-squadcast to the registry

Adding a new package?

If this pull request adds a new package:

• The package's schema URL in this PR is correct.
• The package metadata file, if present, contains:
  • a supported category (one of Cloud, Infrastructure, Network, Database, Monitoring, or Utility).
  • a valid plugin download URL. See Publish Your Package.
  • a description that explains what the package does.
  • a valid logo URL that points to a PNG whose dimensions conform to the others in this repo (e.g., 100x100).
• The package repo contains an Overview doc (/docs/_index.md) that includes:
  • a brief explanation of what the package is and what it does.
  • at least one representative example in all supported languages.
  • a front-matter property for the layout set to package.
• The package repo contains an Installation and Configuration doc (/docs/installation-configuration.md) that includes:
  • links to SDKs in all supported languages.
  • a copyable command for installing the resource plugin if necessary.
  • an example of configuring the provider with pulumi config set.
  • an example of configuring the provider with environment variables.
  • a front-matter property for the layout set to package.
• The repository has:
  • a version tag prefixed with v that corresponds with a valid GitHub release and published package SDKs
• A CODEOWNER has reviewed the PR.
• A member of the @pulumi/docs team has reviewed all documentation.

[ringods]

Hello @IrisDande, I updated the checklist above with the status of what is ok and what needs attention.

Here are some items required action:

• /docs/_index.md needs at least one example in all supported languages. We prefer not having Coming soon entries.
• /docs/_index.md needs the layout front-matter property set to value package.
• /docs/installation-configuration.md needs the layout front-matter property set to value package.

After making these required changes, please create a new release of the provider containing these changes. We only publish tagged/released docs in our registry.

Since other providers have been added to the file community-packages/package-list.json since you opened this PR, please rebase this PR with latest from main.