Add floorplan-dsl library #886

Job	Run time
build	2m 12s
test-scenario-execution	2m 15s
test-scenario-execution-ros	10m 39s
test-example-library	1m 29s
test-example-external-method	1m 40s
test-example-multirobot	5m 45s
scenario-files-validation	2m 33s
test-example-nav2	7m 43s
test-example-scenario	1m 32s
test-example-simulation	6m 6s
test-example-variation	1m 27s
test-scenario-execution-gazebo	9m 1s
tests	14s
	52m 36s

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