feat(gin): support http3 using quic-go/quic-go (#3210)

* experimental support http3

* remove go1.14 and go1.15

* update quic-go package path

* only support go1.19+

* remove go19 support

* update gomod

* chore: refine CI configuration and dependencies

- Remove dynamic Go versioning in favor of pinning to major version `1`
- Update linter version from `v1.56.2` to `v1.58.1` in GitHub Actions workflow

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

* chore: refactor CI workflow and improve tests

- Update the golangci-lint-action version from `v5` to `v6` in the GitHub workflow configuration

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

* chore: update dependencies and CI configurations

- Update Go version requirement from `1.20` to `1.21` in `go.mod`

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

* style: refactor codebase and update tests

- Add an empty line in the import section of `gin.go`

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

* chore: enhance code quality and consistency

- Add `gin.go` to the list of files with specific linters in `.golangci.yml`, applying the `gci` linter.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

---------

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
Co-authored-by: Bo-Yi Wu <appleboy.tw@gmail.com>

.golangci.yml

@@ -55,3 +55,6 @@ issues:
     - linters:
         - revive
       path: _test\.go
+    - path: gin.go
+      linters:
+        - gci