[vscode] Use tagName from config to extract documents.

[alloy]

Now other tags (such as Relay’s graphql tag) will actually be recognized with a apollo.config.js file like the following:

module.exports = {
  client: {
    service: {
      name: "local",
      localSchemaFile: "./data/schema.graphql",
    },
    includes: ["src/**/*.{ts,tsx,graphql}"],
    excludes: ["**/node_modules", "**/__tests__"],
    tagName: "graphql",
  }
}

[jbaxleyiii]

@alloy 👋 thanks for doing this! Does this mean the language server / extension will support Relay projects now? If so that would be really really awesome!

[alloy]

@jbaxleyiii Yup, it does, that’s what we use 👍 Navigating with the extension is feeling pretty sweet thus far!

Btw, can you offer any insight into how long it would take for this to make it into a published release?

[jbaxleyiii]

@alloy that's awesome! Release should be out today!