Proto commits in OpenPPL/ppl.llm.serving

These 7 commits are when the Protocol Buffers files have changed:

Commit:070c02f
Author:Vincent-syr
Committer:JieXin Liang

[release] llm_v2 1. refactor architecture 2. support feature paged attention 3. support feature automatic prefix cache 4. support huggingface tokenizer 5. add more robust support

The documentation is generated from this commit.

Commit:126bd5b
Author:alcanderian

[release] llm_v2

The documentation is generated from this commit.

Commit:2b75060
Author:ouguoyu
Committer:GY

[misc] move grpc related to src/serving/grpc

Commit:440b1a7
Author:Vincent-syr
Committer:GY

[feature] revise service rsp to batch rsp

Commit:052d3d8
Author:Vincent-syr
Committer:GY

[feature] sever support token in & out

Commit:aeb87e6
Author:Vincent-syr
Committer:JieXin Liang

[feature] add early_stopping option

Commit:4bfb948
Author:openppl-public
Committer:openppl-public

initial import