Add flytectl install script #50

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	3m 5s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	4m 11s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	4m 49s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	4m 8s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	22s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	4m 40s
Dry Run Goreleaser	4m 36s
Test Getting started	4m 46s
Lint (datacatalog) / Run Lint	1m 51s
Lint (flyteadmin) / Run Lint	2m 32s
Lint (flytectl) / Run Lint	1m 37s
Lint (flyteidl) / Run Lint	1m 28s
Lint (flyteplugins) / Run Lint	2m 30s
Lint (flytepropeller) / Run Lint	2m 37s
Lint (flytestdlib) / Run Lint	2m 13s
Unit Tests (datacatalog) / Run Unit Test	2m 28s
Unit Tests (flyteadmin) / Run Unit Test	4m 3s
Check Go Generate (datacatalog) / Go Generate	6s
Check Go Generate (flyteadmin) / Go Generate	8s
Check Go Generate (flytecopilot) / Go Generate	6s
Check Go Generate (flytepropeller) / Go Generate	6s
Check Go Generate (flytectl) / Go Generate	6s
Unit Tests (flytecopilot) / Run Unit Test	2m 18s
Unit Tests (flytectl) / Run Unit Test	2m 58s
Unit Tests (flyteplugins) / Run Unit Test	3m 0s
Unit Tests (flytepropeller) / Run Unit Test	3m 1s
Unit Tests (flytestdlib) / Run Unit Test	2m 57s
Integration Test (flyteadmin) / Integration tests	1m 30s
	1h 8m 13s

Provide feedback