Revert removal of support for site lifecycle and dependency on doxia… #716

Job	Run time
shellcheck	3m 6s
checkstyle	3m 22s
build	4m 57s
copyright	3m 13s
spotbugs	5m 37s
tests/cli-linux	4m 59s
javadoc	3m 56s
tests/cli-functional-linux	6m 32s
cli/linux-amd64	4m 34s
tests/archetype-linux	4m 47s
vscode-ext	4m 1s
cli/windows-amd64	5m 20s
tests/linker-linux	4m 50s
cli/darwin-amd64	5m 50s
tests/others-linux	5m 16s
tests/cli-windows	5m 53s
tests/cli-functional-windows	7m 12s
tests/archetype-windows	5m 26s
tests/linker-windows	5m 21s
tests/others-windows	6m 24s
cli/binaries	5s
tests/results	4s
gate	1s
	1h 40m 46s

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