feat: support aws bedrockruntime claude3 (#1328)

* feat: support aws bedrockruntime claude3

closes #622, closes #749, closes #1300

* fix: convert to aws claude model id

* fix: Update AWS adapter to handle stream completions and calculate usage metrics

Based on the file summaries provided, here are the important bullet points for the commit message:

- Add functionality to handle stream completion events from AWS in the relay/adaptor/aws/main.go file
- Marshall AWS response to OpenAI format and calculate usage metrics in the same file
- Implement a custom render function for streaming events in the same file
- Improve error handling for JSON unmarshalling and marshalling errors in the same file

* fix: Implement AWS handler with usage tracking and error handling

- Implemented streaming response handling for AWS handler
- Set response content type to text/event-stream
- Added error handling for failed marshaling/unmarshaling
- Updated return values to include `relaymodel.ErrorWithStatusCode` and `relaymodel.Usage`
- Improved error handling and response formatting for AWS adaptor

* fix: Refactor AWS Adapter for Improved Model Mapping and Error Handling

* Refactor AWS adapter to improve model management
  - Replace hardcoded model list in `adapter.go` with a function to get models from `awsModelIDMap`
  - Update `GetModelList` function to return model list directly
  - Add `GetChannelName` function to get channel name from `Adaptor` object
* Improve error handling and code organization in main.go
  - Replace switch statement with a map to map AWS model IDs to OpenAI model IDs
  - Return an error if the model is not found in the map
  - Use a single return statement instead of wrapping multiple return statements in the `awsModelID` function
  - Add a new error message for when the model is not found in the map in the `Handler` function

* fix: bug fix

* chore: change variable name & package

* chore: change variable name

* perf: update config related code

---------

Co-authored-by: JustSong <songquanpeng@foxmail.com>

relay/adaptor/aws/adapter.go

@@ -0,0 +1,74 @@
+package aws
+
+import (
+	"github.com/songquanpeng/one-api/common/ctxkey"
+	"io"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/pkg/errors"
+	"github.com/songquanpeng/one-api/relay/adaptor"
+	"github.com/songquanpeng/one-api/relay/adaptor/anthropic"
+	"github.com/songquanpeng/one-api/relay/meta"
+	"github.com/songquanpeng/one-api/relay/model"
+)
+
+var _ adaptor.Adaptor = new(Adaptor)
+
+type Adaptor struct {
+}
+
+func (a *Adaptor) Init(meta *meta.Meta) {
+
+}
+
+func (a *Adaptor) GetRequestURL(meta *meta.Meta) (string, error) {
+	return "", nil
+}
+
+func (a *Adaptor) SetupRequestHeader(c *gin.Context, req *http.Request, meta *meta.Meta) error {
+	return nil
+}
+
+func (a *Adaptor) ConvertRequest(c *gin.Context, relayMode int, request *model.GeneralOpenAIRequest) (any, error) {
+	if request == nil {
+		return nil, errors.New("request is nil")
+	}
+
+	claudeReq := anthropic.ConvertRequest(*request)
+	c.Set(ctxkey.RequestModel, request.Model)
+	c.Set(ctxkey.ConvertedRequest, claudeReq)
+	return claudeReq, nil
+}
+
+func (a *Adaptor) ConvertImageRequest(request *model.ImageRequest) (any, error) {
+	if request == nil {
+		return nil, errors.New("request is nil")
+	}
+	return request, nil
+}
+
+func (a *Adaptor) DoRequest(c *gin.Context, meta *meta.Meta, requestBody io.Reader) (*http.Response, error) {
+	return nil, nil
+}
+
+func (a *Adaptor) DoResponse(c *gin.Context, resp *http.Response, meta *meta.Meta) (usage *model.Usage, err *model.ErrorWithStatusCode) {
+	if meta.IsStream {
+		err, usage = StreamHandler(c, resp)
+	} else {
+		err, usage = Handler(c, resp, meta.PromptTokens, meta.ActualModelName)
+	}
+	return
+}
+
+func (a *Adaptor) GetModelList() (models []string) {
+	for n := range awsModelIDMap {
+		models = append(models, n)
+	}
+
+	return
+}
+
+func (a *Adaptor) GetChannelName() string {
+	return "aws"
+}