feat(charts): Style charts to match editor's color theme#76

saltenasl merged 8 commits intomaindeepnote/vscode-deepnote:mainfrom

oleh/grn-4953-dark-mode-support-for-chart-block-outputdeepnote/vscode-deepnote:oleh/grn-4953-dark-mode-support-for-chart-block-outputCopy head branch name to clipboard