Li2CO3

feat(grpc): add grpc metadata api

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#### What type of PR is this?

## Description fix trimmer when parsing escapingString with "" ## Motivation and Context ## Related Issue

## Description to solve exp branch, move exp feature to main branch as an option ## Motivation and Context ## Related Issue

**Describe the bug** https://github.com/cloudwego/kitex/issues/835 When importing google protobuf files, such as timestamp, those structs don't have fastpb interface, so users cannot compile codes. **To Reproduce** ``` syntax = "proto3"; option...

#### What type of PR is this? optimize #### Check the PR title. - [x] This PR title match the format: \(optional scope): \ - [x] The description of this...

## Description ## Motivation and Context ## Related Issue

**Describe the bug** https://github.com/cloudwego/kitex/issues/1624 **To Reproduce** - model.proto ： ``` syntax = "proto3"; package svc; option go_package = "svc/model"; message Model { // 这里定义一个嵌套的 message message SubModel { int64 id...

WIP: feat: kitex tool generate http tags

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#### What type of PR is this? feat #### Check the PR title. - [ ] This PR title match the format: \(optional scope): \ - [ ] The description...

#### What type of PR is this? #### Check the PR title. - [ ] This PR title match the format: \(optional scope): \ - [ ] The description of...