Add command tips to COMMAND DOCS (#10104)
Adding command tips (see https://redis.io/topics/command-tips) to commands. Breaking changes: 1. Removed the "random" and "sort_for_script" flags. They are now command tips. (this isn't affecting redis behavior since #9812, but could affect some client applications that's relying on COMMAND command flags) Summary of changes: 1. add BLOCKING flag (new flag) for all commands that could block. The ACL category with the same name is now implicit. 2. move RANDOM flag to a `nondeterministic_output` tip 3. move SORT_FOR_SCRIPT flag to `nondeterministic_output_order` tip 3. add REQUEST_POLICY and RESPONSE_POLICY where appropriate as documented in the tips 4. deprecate (ignore) the `random` flag for RM_CreateCommand Other notes: 1. Proxies need to send `RANDOMKEY` to all shards and then select one key randomly. The other option is to pick a random shard and transfer `RANDOMKEY `to it, but that scheme fails if this specific shard is empty 2. Remove CMD_RANDOM from `XACK` (i.e. XACK does not have RANDOM_OUTPUT) It was added in 9e4fb96c, I guess by mistake. Also from `(P)EXPIRETIME` (new command, was flagged "random" by mistake). 3. Add `nondeterministic_output` to `OBJECT ENCODING` (for the same reason `XTRIM` has it: the reply may differ depending on the internal representation in memory) 4. RANDOM on `HGETALL` was wrong (there due to a limitation of the old script sorting logic), now it's `nondeterministic_output_order` 5. Unrelated: Hide CMD_PROTECTED from COMMAND
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