[Debugger] Add support for restart requests #8828

Job	Run time
Build Ballerina Lang	8m 10s
Build Ballerina Distribution	1h 8m 24s
Build Stdlib Level (1)	3m 45s
Build Stdlib Level (2)	12m 42s
Build Stdlib Level (3)	9m 0s
Build Stdlib Level (4)	15m 28s
Build Stdlib Level (5)	28m 23s
Build Stdlib Level (6)	25m 29s
Build Stdlib Level (7)	34m 5s
Build Stdlib Level (8)	41m 54s
Build Stdlib Level (9)	5m 14s
	4h 12m 34s

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