spl-token: Add associated token account CreateIdempotent instruction #907

Job	Run time
lint	35s
tests (tests/integration/test_async_http_client.py)	1m 9s
tests (tests/integration/test_async_token_client.py)	1m 10s
tests (tests/integration/test_http_client.py)	1m 12s
tests (tests/integration/test_token_client.py)	1m 12s
tests (tests/integration/test_websockets.py)	2m 25s
tests (tests/integration/test_recent_performance_samples.py)	1m 57s
tests (tests/integration/test_memo.py)	1m 10s
tests (tests/unit)	28s
tests (src)	34s
coverage	29s
test	1s
	12m 22s

Provide feedback