Sync upstream, migrate org refs, introduce go.work workspace & example modules #154

Job	Run time
Validate Examples (reverse-proxy)	20s
Validate Examples (basic-app)	23s
Validate Examples (observer-pattern)	15s
Validate Examples (multi-tenant-app)	24s
Validate Examples (feature-flag-proxy)	17s
Validate Examples (verbose-debug)	42s
Validate Examples (testing-scenarios)	29s
Validate Examples (http-client)	23s
Validate Examples (instance-aware-db)	57s
Validate Examples (multi-engine-eventbus)	41s
Validate Examples (advanced-logging)	21s
Validate Examples (health-aware-reverse-proxy)	26s
Validate Examples (logmasker-example)	16s
Examples Overview	6s
	6m 0s

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