Feature Request: Add Spanish-English Dictionary as a Secondary Option to the M-W Dictionary

[KzBeck]

Describe the bug
Not a bug Feature Request. AutoDefine is really useful. I would like to see the addition of the "MERRIAM_WEBSTER_SPANISH-ENGLISH_API_KEY"

The medical dictionary is not of use to me, but the "MERRIAM_WEBSTER_SPANISH-ENGLISH_API_KEY" would be.

To Reproduce
na

Expected behavior
I would like to see the "MERRIAM_WEBSTER_SPANISH-ENGLISH_API_KEY" work the same way as the M-W dictionary, but in Spanish - English, English to Spanish. Currently, it brings up images in Spanish, but no definitions.

Debug info:

• Anki Version 2.1.35 (84dcaa86)
• OS: [Linux, Mac, Windows]
• Windows 10 Pro

Additional context (e.g., exception)
Add any other context about the problem here.