add CI workflow to sync, build, publish, release moto-ext #757

Job	Run time
Caching (3.11)	11s
Caching (3.13)	9s
Caching (3.12)	12s
Caching (3.10)	9s
Caching (3.9)	12s
Linting (3.9)	1m 56s
Linting (3.12)	1m 18s
Linting (3.11)	1m 8s
Linting (3.10)	1m 16s
Linting (3.13)	1m 19s
testserver / test (3.10)	11s
testserver / test (3.9)	7s
cpptest / test	3s
testserver / test (3.13)	8s
testserver / test (3.11)	1s
testserver / test (3.12)	7s
gotest / test	1m 13s
sagemaker_client_test / test	1s
testcdk / cdk_start (3.12)	48s
clitest / test	48s
javatest / test	1m 15s
testproxy / test (ubuntu-latest, 3.12)	1s
testproxy / test (ubuntu-latest, 3.10)	1m 26s
testproxy / test (windows-latest, 3.11)	1s
testproxy / test (windows-latest, 3.10)	1m 25s
dotnettest / test	46s
testproxy / test (windows-latest, 3.12)	1m 22s
testproxy / test (ubuntu-latest, 3.11)	1s
terraformexamplestest / Find Jobs	1s
jstest / test	53s
rubytest / test (3.3)	1m 11s
test / test (3.10)	14s
test / test (3.11)	1s
test / test (3.12)	1s
test / test (3.9)	1s
test / test (3.13)	1s
terraformexamplestest / test	1s
	19m 58s

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