Update docs and remove Pharo 8 and 9 support #294

Job	Run time
Pharo64-10 + app-config	55s
Pharo64-10 + app-control	1m 0s
Pharo64-10 + app-info	43s
Pharo64-10 + core	55s
Pharo64-10 + dependent-sunit-extensions	42s
Pharo64-10 + deployment	1m 4s
Pharo64-10 + development	1m 17s
Pharo64-10 + examples	43s
Pharo64-10 + healthcheck	34s
Pharo64-10 + json-rpc	38s
Pharo64-10 + loggers	44s
Pharo64-10 + metrics	42s
Pharo64-10 + metrics-http	52s
Pharo64-10 + tests	1m 0s
Pharo64-10 + tools	33s
Pharo64-11 + app-config	52s
Pharo64-11 + app-control	1m 0s
Pharo64-11 + app-info	50s
Pharo64-11 + core	39s
Pharo64-11 + dependent-sunit-extensions	43s
Pharo64-11 + deployment	1m 8s
Pharo64-11 + development	59s
Pharo64-11 + examples	1m 8s
Pharo64-11 + healthcheck	59s
Pharo64-11 + json-rpc	43s
Pharo64-11 + loggers	53s
Pharo64-11 + metrics	46s
Pharo64-11 + metrics-http	39s
Pharo64-11 + tests	1m 8s
Pharo64-11 + tools	27s
	25m 16s

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