add discovery metadata process workflows

[tomkralidis]

Adds the following discovery metadata process/workflows:

WIS2 topic hierarchy

List all topics at a given level

curl -X 'POST' \
  'http://localhost:8999/oapi/processes/pywcmp-wis2-topics-list/execution' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
  "inputs": {
    "topic": "origin/a/wis2"
  }
}'

Validate a topic hierarchy

curl -X 'POST' \
  'http://localhost:8999/oapi/processes/pywcmp-wis2-topics-validate/execution' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
  "inputs": {
    "topic": "origin/a/wis2",
    "fuzzy": true
  }
}'

WIS2 Metadata (WMO Core Metadata Profile 2 [WCMP2])

Generate discovery metadata from an MCF file

curl -X 'POST' \
  'http://localhost:8999/oapi/processes/pygeometa-metadata-generate/execution' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
  "inputs": {
    "mcf": <<MCF_FILE_AS_JSON>>,
    "schema": "oarec-record"
  }
}'

Run WCMP2 executable test suite on an OGC API - Records JSON file

curl -X 'POST' \
  'http://localhost:8999/oapi/processes/pywcmp-wis2-wcmp2-ets/execution' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
  "inputs": {
    "record": <<OGC_API_RECORDS_JSON>>
  }
}'

SwaggerUI with more information can be found at http://localhost:8999/oapi/openapi?f=html

cc @sabersd

[webb-ben]

+1 nice work