feat: Add select-algorithm samples for DocumentDB vector index selection (5 languages) #53

Job	Run time
Python - vector-search-python	11s
Python - select-algorithm-python	10s
TypeScript - vector-search-typescript	12s
Java - select-algorithm-java	19s
TypeScript - vector-search-agent-typescript	19s
.NET - ai/select-algorithm-dotnet/SelectAlgorithm.csproj	11s
Java - vector-search-java	14s
Go - select-algorithm-go	14s
Go - vector-search-agent-go	13s
.NET - documentdb-samples.sln	16s
Go - vector-search-go	33s
TypeScript - select-algorithm-typescript	15s
	3m 7s

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