Line height setting consistency

Issue Type: <b>Feature Request</b> There are a few Line Height settings, but they're a little inconsistent. Units: editor.lineHeight and debug.console.lineHeight use pixels, whereas markdown.preview.lineHeight and terminal.integrated.lineHeight are decimal (ex: 1.6). Ideally all line heights should be decimal so that they would look consistent with different font sizes and/or on different systems which may have different pixel densities, etc. Application: The "Output" panel uses editor.lineHeight, but it would be better if it were in sync with the terminal. It should either have it's own setting or use terminal.integrated.lineHeight. VS Code version: Code 1.48.2 (a0479759d6e9ea56afa657e454193f72aef85bd0, 2020-08-25T10:09:08.021Z) OS version: Darwin x64 20.0.0 Remote OS version: Linux x64 4.19.76-linuxkit <!-- generated by issue reporter -->