Consolidate area reporting calculations/reporting

[jeffng-or]

trafficstars

Description

We currently have at least three different places we report area and utilization. Each one of them is different, which can lead to confusion:

1. report_design_area tcl command: report area & utilization for all cells, excluding fillers, endcaps, and welltaps (Resizer)
2. metadata.json: utilization is (std cell area + macro area) / core area. std cell area excludes fillers, pads, and cover cells, but includes endcaps and welltaps
3. hierarchy browser: reports area for all cell types without exclusions

Suggested Solution

No response

Additional Context

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