This series futurizes two synchronous functions used for data reconciliation:
`data_read_resolver::resolve` and `to_data_query_result` and does so
by introducing lower-level asynchronous infrastructure:
`mutation_partition_view::accept_gently`,
`frozen_mutation::unfreeze_gently` and `frozen_mutation::consume_gently`,
and `mutation::consume_gently`.
This trades some cycles on this cold path to prevent known reactor stalls.
Fixes#2361Fixes#10038Closes#10482
* github.com:scylladb/scylla:
mutation: add consume_gently
frozen_mutation: add consume_gently
query: coroutinize to_data_query_result
frozen_mutation: add unfreeze_gently
mutation_partition_view: add accept_gently methods
storage_proxy: futurize data_read_resolver::resolve
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