Optional Python and R attributes within configuration file #3816

Job	Run time
home-view-unit-tests / lint	12s
build / build	1m 38s
agent / native (macos-latest)	48s
agent / native (windows-latest)	1m 28s
agent / native (ubuntu-latest)	45s
lint / lint	1m 34s
vscode / native (macos-latest)	59s
vscode / native (windows-latest)	5m 35s
vscode / native (ubuntu-latest)	1m 22s
archive / archive	38s
package / vscode	4m 10s
vscode-ui / ui-tests (ubuntu-latest)	6m 55s
upload / upload	48s
	26m 52s

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