Added test to check CapnProto cache

[AVMusorin]

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Since the current schema for CapnProto doesn't use cache, the
integration test was for the future if someone adds a cache.

Also, I was curious how schema cache affects performance and I compared reading binary files
with Protobuf (I guess it works the same for CapnProto).

for i in {1..1000}; do clickhouse-client -q \
  "select * from test.simple format Protobuf settings format_schema='/format_schemas/simple:KeyValuePair'" > simple-protobuf${i}.bin; done

clickhouse-client --time -q "select * from file('simple-protobuf{1..999}.bin', 'Protobuf') format Null settings format_schema = 'simple:KeyValuePair'"

Protobuf with cache and without works with approximately the same
time.

Follows - #55064
cc @Avogar

[robot-ch-test-poll3]

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[AVMusorin]

Failed tests don't look related to the current changes.

[Avogar]

Ah, I forgot we don't have cache for CapnProto schemas :)
Good to have a test for future