Tests

Add PrecompileTools workload to reduce TTFX #289

Job	Run time
Tests (1, JET) / Tests - JET	9m 58s
Tests (lts, Core) / Tests - Core	4m 41s
Tests (lts, Downstream) / Tests - Downstream	10m 15s
Tests (pre, Core) / Tests - Core	7m 27s
Tests (pre, Downstream) / Tests - Downstream	18m 21s
Tests (1, Downstream) / Tests - Downstream	11m 25s
Tests (pre, JET) / Tests - JET	5m 46s
Tests (1, Core) / Tests - Core	7m 52s
Tests (lts, JET) / Tests - JET	3m 9s
	1h 18m 54s

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