feature: Field component attribute

[masonlr]

Add "component" attribute on each field. The attribute is used to specify the type of component rendered in the front end, for example:

• "component": "slider"
• "component": "heading"

An example JSON serialisation of a field with the component attribute is

{
    "child_fields": [],
    "component": "slider",
    "name": "wall_velocity",
    "specs": [
        {
            "id": 59,
            "name": "min",
            "value": "0.1"
        },
        {
            "id": 60,
            "name": "max",
            "value": "2.0"
        },
        {
            "id": 61,
            "name": "step",
            "value": "0.01"
        },
        {
            "id": 62,
            "name": "default",
            "value": "0.5"
        },
        {
            "id": 63,
            "name": "units",
            "value": "m/s"
        }
    ]
}

[codecov-io]

Codecov Report

:exclamation: No coverage uploaded for pull request base (master@d4bd196). Click here to learn what that means. The diff coverage is 52.94%.

@@            Coverage Diff            @@
##             master      #24   +/-   ##
=========================================
  Coverage          ?   77.98%           
=========================================
  Files             ?       28           
  Lines             ?     1190           
  Branches          ?        0           
=========================================
  Hits              ?      928           
  Misses            ?      262           
  Partials          ?        0

Impacted Files	Coverage Δ
tests/create_case_store.py	48.38% <0%> (ø)
app.py	0% <0%> (ø)
tests/create_cavity_case.py	14.28% <0%> (ø)
connection/models.py	93.65% <100%> (ø)
connection/api_schemas.py	86.95% <100%> (ø)
connection/schemas.py	71.05% <100%> (ø)

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