Add installation docs #519

Job	Run time
comment-notification	0s
License Check / License Check	35s
prerequisites / prerequisites	1m 17s
build_sdk / build_sdk (nodejs)	55s
build_provider / Build linux-amd64	1m 43s
build_sdk / build_sdk (python)	1m 4s
build_provider / Build linux-arm64	1m 57s
build_sdk / build_sdk (dotnet)	44s
build_provider / Build darwin-amd64	1m 45s
build_sdk / build_sdk (go)	1m 22s
build_provider / Build darwin-arm64	1m 49s
build_sdk / build_sdk (java)	1m 10s
build_provider / Build windows-amd64	2m 1s
test (nodejs, local)	1m 38s
test (python, local)	1m 49s
test (dotnet, local)	1m 43s
test (go, local)	1m 35s
test (java, local)	1m 31s
sentinel	4s
	24m 42s

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