Auto-generate per-language dependencies for referenced schema types

[danielrbradley]

When using a type from an external SDK, dependencies must be manually added via the Metadata.LanguageMap for each language in order for the SDKs to be buildable.

Adding a resource property such as:

	Password *random.RandomPassword `pulumi:"password" provider:"[email protected]:index/randomPassword:RandomPassword"`

Generates a schema property such as:

        "password": {
          "$ref": "/random/v4.8.1/schema.json#/resources/random:index%2FrandomPassword:RandomPassword"
        }

There is no "language" section present to the schema.

Each SDK is missing a reference to the Random package:

• dotnet should reference Pulumi.Random
• nodejs should reference @pulumi/random
• python should reference pulumi-random

This might also be implementable directly in each language instead by collecting all external references.

Workaround

Within the infer.Provider call, add Metadata. E.g. for dotnet, we could add:

		Metadata: schema.Metadata{
			LanguageMap: map[string]any{
				"dotnet": map[string]any{
					"packageReferences": map[string]string{
						"Pulumi.Random": "4.8.1",
					},
				},
			},
		},