Add action input to choose between bw cloud regions

[kimdre]

This PR is related to my issue #100 and adds a new input to the Github Action to select the vault region if the official cloud-hosted service by Bitwarden is used.
Users can specify it by using the cloud_region input with either

• us for https://vault.bitwarden.com/ (default)
• eu for https://vault.bitwarden.eu/

Example

- name: Get Secrets
  uses: bitwarden/sm-action@v2
  with:
    access_token: ${{ secrets.BW_ACCESS_TOKEN }}
    cloud_region: "eu"
    secrets: |
      12345678-8e0f-4ecb-9a10-65113e8aaf66 > VAR1
      12345678-8e0f-4ecb-9a10-65113e8aaf66 > VAR2

This is my first time writing typescript, so please let me know if anything is wrong.

[bitwarden-bot]

Checkmarx One – Scan Summary & Details – ab5e5af3-ec47-4493-ad2c-699e25738aae

No New Or Fixed Issues Found

[coltonhurst]

Thanks @kimdre for your PR :)

Looks like we don't have CLAassistant and the bitwarden-bot (to create internal tickets) running for sm-action yet. I've created the internal ticket SM-1220 to track this.

[CLAassistant]

All committers have signed the CLA.