Add 2 new healing units to game

[lijim]

1. Find the artwork for 2 new healing units from pexels, unsplash or pixabay (free image sites)
2. Add the units to the 'misc' section of cardDb/units.ts: https://github.com/lijim/monks-and-mages/blob/main/src/cardDb/units/units.ts
3. Be sure to add them to export const UnitCards = {
4. Right now the only other unit with a healing effect is WATER_GUARDIAN. The colors that have access to healing are Green (bamboo) and blue (water)
5. You may notice that some imgSrc's are URL's and others are relative file paths. Add the imgSrc as a URL
6. Run yarn scrapeImages && yarn compressImages to scrape the images off the web and compress the new units into this folder using imageMagick: https://github.com/lijim/monks-and-mages/tree/main/assets/images/units. See https://github.com/lijim/monks-and-mages#scripts for instructions

[lijim]

For this issue, let's use the 'Create a branch' feature of Github: