docs(contribute): rewrite flyte contribute docs based on 4960 #5453

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	4m 46s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	4m 47s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	4m 12s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	5m 33s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	6m 39s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	5m 53s
Dry Run Goreleaser	7m 21s
Test Getting started	8m 6s
Lint (datacatalog) / Run Lint	2m 32s
Lint (flyteadmin) / Run Lint	3m 14s
Check Go Generate (flytecopilot) / Go Generate	1m 31s
Check Go Generate (flyteadmin) / Go Generate	2m 22s
Check Go Generate (datacatalog) / Go Generate	1m 22s
Check Go Generate (flytectl) / Go Generate	2m 13s
Check Go Generate (flytepropeller) / Go Generate	2m 28s
Lint (flytectl) / Run Lint	2m 35s
Lint (flyteidl) / Run Lint	1m 55s
Lint (flyteplugins) / Run Lint	3m 8s
Lint (flytepropeller) / Run Lint	3m 12s
Lint (flytestdlib) / Run Lint	2m 36s
Unit Tests (datacatalog) / Run Unit Test	3m 4s
Unit Tests (flyteadmin) / Run Unit Test	4m 25s
Unit Tests (flytecopilot) / Run Unit Test	2m 35s
Unit Tests (flytectl) / Run Unit Test	3m 41s
Unit Tests (flyteplugins) / Run Unit Test	3m 55s
Unit Tests (flytepropeller) / Run Unit Test	4m 7s
Unit Tests (flytestdlib) / Run Unit Test	3m 45s
Integration Test (flyteadmin) / Integration tests	6m 30s
	1h 48m 28s

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