feature: include more artifact info in lava file

include more information from each of the artifacts into the json output for lava to read in an display to the examiner.

right now we have the required things for functional viewing in lava:
- name
- category
- icon
- module

we need to add further information to satisfy requirement for a feature in lava to match the html output in showing additional information about the artifact. things we need:
- description
- any dates
- author

i suggest we put these additional items in a dictionary for metadata so we can include new information without having to make specific adjustments in lava. lava can read the metadata dictionary and display all items on the artifact info page.

example
``` json
"artifacts": {
"Microsoft Teams": [
{
"name": "Teams Call Logs",
"tablename": "teams_call_logs",
"metadata": {
"description": "something here but need to do a string escape to prevent breaking the json",
"author": "ansel adams",
...
}
"module": "teams",

```

any thoughts on different structure?