fix(graphql): use boolean parameter for StartRecordingMutator restart

[maxcao13]

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---

Fixes: #1403

Description of the change:

Allows restart to be specified by a boolean parameter.

How to manually test:

Try a query like:

// will fail
query($episode: String! = "ASD") { 
    targetNodes(filter: { annotations: "PORT == 9093" }) {
        doStartRecording(recording: { 
            name: "graph-itest", 
            duration: 30,
            template: "Profiling", 
            templateType: "TARGET", 
            metadata: {
                labels: {
                    cryostatiotopologygroup: $episode,
                } 
            },
            restart: "true",
        })
        { 
            name state duration 
        }
    } 
}

vs

// correct
query($episode: String! = "ASD") { 
    targetNodes(filter: { annotations: "PORT == 9093" }) {
        doStartRecording(recording: { 
            name: "graph-itest", 
            duration: 30,
            template: "Profiling", 
            templateType: "TARGET", 
            metadata: {
                labels: {
                    cryostatiotopologygroup: $episode,
                } 
            },
            restart: true,
        })
        { 
            name state duration 
        }
    } 
}

[github-actions]

Test image available:

$ CRYOSTAT_IMAGE=ghcr.io/cryostatio/cryostat:pr-1406-7e9613d7ca8ce13cb667c386e9e87c5ce2ef7267 sh smoketest.sh

[tthvo]

Looks good to me! Thanks for helping :D

[andrewazores]

Anything else expected or can this PR be unmarked as draft?

[github-actions]

Test image available:

$ CRYOSTAT_IMAGE=ghcr.io/cryostatio/cryostat:pr-1406-ef14dfaf8903ab893f728101ebf3081ed4aa057a sh smoketest.sh

[github-actions]

Test image available:

$ CRYOSTAT_IMAGE=ghcr.io/cryostatio/cryostat:pr-1406-64a845f27ab544395dd3626895cb823b8abb6294 sh smoketest.sh