refactor: fix linting errors and warnings

[jfrer]

When running eslint there were a couple of linting errors and warnings:

quiver-frontend\postcss.config.js
  1:1  error  'module' is not defined  no-undef

quiver-frontend\src\components\Workflows.vue
  78:2  error  Parsing error: Unexpected token. Did you mean `{'}'}` or `}`?

quiver-frontend\src\components\workflows\TrendLegend.vue
  2:7  warning  'props' is assigned a value but never used  @typescript-eslint/no-unused-vars

quiver-frontend\src\components\workflows\WorkflowsIntroSection.vue
  6:7  warning  'props' is assigned a value but never used  @typescript-eslint/no-unused-vars

quiver-frontend\src\components\workflows\WorkflowsTable.vue
  2:33  warning  'computed' is defined but never used  @typescript-eslint/no-unused-vars

quiver-frontend\src\components\workflows\WorkflowsTimeline.vue
  22:20  error  Parsing error: Unexpected token. Did you mean `{'>'}` or `>`?

quiver-frontend\src\components\workflows\timeline\BaseTimelineDetailedChart.vue
  216:44  warning  'e' is defined but never used  @typescript-eslint/no-unused-vars

quiver-frontend\src\components\workflows\timeline\MetricAverageChart.vue
  47:2  error  Parsing error: Unexpected token. Did you mean `{'}'}` or `}`?

quiver-frontend\src\components\workflows\timeline\TimelineItem.vue
  16:7  warning  'props' is assigned a value but never used  @typescript-eslint/no-unused-vars

quiver-frontend\tailwind.config.js
  12:1  error  'module' is not defined  no-undef

quiver-frontend\vite.config.js
  22:29  error  '__dirname' is not defined  no-undef

✖ 11 problems (6 errors, 5 warnings)

This PR resolves these issues.