eleventy elasticsearch plugin

Additional NPM package requirements:

• npm install elasticsearch
• npm install dotenv

Installation:

1. git clone https://github.com/SDScandrettKint/eleventy_elasticsearch.git elasticsearch in the "_plugins/" directory
2. create a .env file with ES_PASSWORD=(a value)
3. docker-compose up -d to start elasticsearch
4. run node index.js to create the index and go through content markdown yaml

Improvements to make

• contributor needs to be unpacked from object, currently just stored as object type in mapping but should be text array