Allow custom html attributes in `addTable` function

Describe the enhancement
Please add ability to set custom HTML attributes
https://github.com/actions/toolkit/blob/main/packages/core/src/summary.ts#L229

Current code

await core.summary
    .addHeading("My Header")
    .addTable([
      [
        {data: 'Status', header: true},
        {data: 'Total', header: true},
        {data: 'Critical', header: true},
        {data: 'High', header: true},
        {data: 'Medium', header: true},
        {data: 'Low', header: true},
      ],
      [
        findings.status,
        findings.total?.toString()!,
        findings.critical?.toString()!,
        findings.high?.toString()!,
        findings.medium?.toString()!,
        findings.low?.toString()!,
      ]
    ])
    .write()

Current summary table format

<h1>My header</h1>
<table><tr><th>Status</th><th>Total</th><th>Critical</th><th>High</th><th>Medium</th><th>Low</th></tr><tr><td>COMPLETE</td><td>13</td><td>2</td><td>5</td><td>5</td><td>1</td></tr></table>

Desired code

await core.summary
    .addHeading("My Header")
    .addTable([
      [
        {data: 'Status', header: true},
        {data: 'Total', header: true},
        {data: 'Critical', header: true},
        {data: 'High', header: true},
        {data: 'Medium', header: true},
        {data: 'Low', header: true},
      ],
      [
        findings.status,
        { 
            data: findings.total?.toString()!, 
            attributes: {
               "fgcolor": "red
            }
        },
        findings.critical?.toString()!,
        findings.high?.toString()!,
        findings.medium?.toString()!,
        findings.low?.toString()!,
      ]
    ])
    .write()

Desired summary table format

<h1>My header</h1>
<table><tr><th>Status</th><th>Total</th><th>Critical</th><th>High</th><th>Medium</th><th>Low</th></tr><tr><td fgcolor="blue">COMPLETE</td><td fgcolor="red">13</td><td>2</td><td>5</td><td>5</td><td>1</td></tr></table>

Start at packages/core/src/summary.ts around the addTable function referenced in the issue, and trace how table cells become HTML. Add support for the requested cell attributes and verify that generated table-cell markup matches the desired HTML while existing cells remain unchanged.