Add `.gitignore` files to default templates #191

Job	Run time
search	2s
lint (sdk/assemblyscript/src)	17s
lint (sdk/assemblyscript/examples/anthropic-functions)	20s
lint (sdk/assemblyscript/examples/auth)	25s
lint (sdk/assemblyscript/examples/classification)	24s
lint (sdk/assemblyscript/examples/collections)	24s
lint (sdk/assemblyscript/examples/dgraph)	21s
lint (sdk/assemblyscript/examples/embedding)	21s
lint (sdk/assemblyscript/examples/graphql)	20s
lint (sdk/assemblyscript/examples/http)	25s
lint (sdk/assemblyscript/examples/postgresql)	20s
lint (sdk/assemblyscript/examples/simple)	22s
lint (sdk/assemblyscript/examples/textgeneration)	24s
lint (sdk/assemblyscript/examples/vectors)	24s
	4m 49s

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