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[Core] support LoRA and prompt adapter in content-based hashing for Block Manager v2 prefix caching (#8240)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>

Signed-off-by: andoorve <37849411+andoorve@users.noreply.github.com>
Signed-off-by: Sourashis Roy <sroy@roblox.com>
Co-authored-by: Sourashis Roy <sroy@roblox.com>

Signed-off-by: rickyx <rickyx@anyscale.com>

Signed-off-by: Pavani Majety <pmajety@nvidia.com>

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>

Co-authored-by: Zhuohan Li <zhuohan123@gmail.com>

Removing the block manager v1. This is the initial piece of prefix-caching-centric design. In order to achieve prefix-caching-centric design, we need to simplify the code path so that we only use v2 block manager (which has much higher performance on prefix caching).

[Core] Add an environment variable which needs to be set explicitly to allow BlockSpaceManagerV1 (#9149)

Co-authored-by: Varun Sundar Rabindranath <varun@neuralmagic.com>

Co-authored-by: Alexander Matveev <alexm@neuralmagic.com>

[Core] Subclass ModelRunner to support cross-attention & encoder sequences (towards eventual encoder/decoder model support) (#4942)
Co-authored-by: Andrew Feldman <afeld2012@gmail.com>
Co-authored-by: Nick Hill <nickhill@us.ibm.com>

Co-authored-by: Antoni Baum <antoni.baum@protonmail.com>

Signed-off-by: Lei Wen <wenlei03@qiyi.com>
Co-authored-by: Lei Wen <wenlei03@qiyi.com>

[Core] Cross-attention KV caching and memory-management (towards eventual encoder/decoder model support) (#4837)

Co-authored-by: Roger Wang <ywang@roblox.com>

Co-authored-by: Ruth Evans <ruthevans@Ruths-MacBook-Pro.local>

Co-authored-by: Lei Wen <wenlei03@qiyi.com>