Migration to v7

[anshss]

Objective

• Run tests on each of the subdirectories tests twice a day and on PRs
• Automatically migrate all subdirectories to the latest SDK version on its release

Changes

• Configured NX with a monorepo.
• Configured NX in each directory.
• All directories have an “update-lit” command configured with NX.
• This command calls a bash script in all directories to upgrade their Lit packages to the latest version under the scripts directory.
• Directories containing tests have a “test-lit” command.
• Both commands can be extended to each new example added by creating a “project.json” file and configuring it with the desired command.
• There’s no alteration to the structure of subdirectories except for “decrypt-api-key-in-action,” which is moved to a subfolder Nodejs to adhere to the template rules.
• The dependabot.yml action will regularly check for an SDK update and create a PR if one occurs.
• The update-lit.yml action can be run manually or will run on PRs created by Dependabot.
• The test-lit.yml action will run on PRs made to master (or the frequency could be updated later), and all examples will be tested on the latest SDK version.
• secrets.example file indicates the secret variables needed to serve all the environment variables for tests.