docs: Add documentation for service bos and obs

.gitignore

@@ -18,3 +18,7 @@
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+
+# Jetbrain IDE
+.idea
+*.iml

docs/go-storage/services/bos.md

@@ -0,0 +1,60 @@
+[Baidu Object Storage](https://cloud.baidu.com/product/bos.html)
+
+## Project
+
+<https://github.com/beyondstorage/go-service-bos>
+
+## Config
+
+### Servicer
+
+| Name | Required | Comments |
+| ---- | -------- | -------- |
+| [credential](../pairs/credential.md) | Y | only support `hmac` protocol |
+| [endpoint](../pairs/endpoint.md)     | Y        | specific domain to access this storager |
+
+### Storager
+
+| Name | Required | Comments |
+| ---- | -------- | -------- |
+| [name](../pairs/name.md) | Y | bucket name |
+| [work_dir](../pairs/work_dir.md) | N | work dir |
+
+## Example
+
+Init servicer (see [this page](../operations/index.md) for details)
+
+```go
+import (
+	_ "github.com/beyondstorage/go-service-bos"
+	"github.com/beyondstorage/go-storage/v4/services"
+)
+
+srv, err := services.NewServicerFromString("bos://?credential=hmac:access_key_id:secret_access_key&endpoint=https:<region>.bcebos.com")
+if err != nil {
+    log.Fatalf("bos new service: %v", err)
+}
+```
+
+Init storager (see [this page](../operations/index.md) for details)
+
+```go
+import (
+	_ "github.com/beyondstorage/go-service-bos"
+	"github.com/beyondstorage/go-storage/v4/services"
+)
+
+store, err := services.NewStoragerFromString("bos://<bucket_name>/path/to/workdir?credential=hmac:access_key_id:secret_access_key&endpoint=https:<region>.bcebos.com")
+if err != nil {
+    log.Fatalf("bos new service: %v", err)
+}
+```
+
+## Implementation
+
+This service implements following interfaces:
+
+- [Servicer](../operations/servicer/index.md)
+
+- [Storager](../operations/storager/index.md)
+

docs/go-storage/services/obs.md

@@ -0,0 +1,60 @@
+[Huawei Object Storage Service](https://www.huaweicloud.com/product/obs.html)
+
+## Project
+
+<https://github.com/beyondstorage/go-service-obs>
+
+## Config
+
+### Servicer
+
+| Name | Required | Comments |
+| ---- | -------- | -------- |
+| [credential](../pairs/credential.md) | Y | only support `hmac` protocol |
+| [endpoint](../pairs/endpoint.md)     | Y        | specific domain to access this storager |
+
+### Storager
+
+| Name | Required | Comments |
+| ---- | -------- | -------- |
+| [name](../pairs/name.md) | Y | bucket name |
+| [work_dir](../pairs/work_dir.md) | N | work dir |
+
+## Example
+
+Init servicer (see [this page](../operations/index.md) for details)
+
+```go
+import (
+	_ "github.com/beyondstorage/go-service-obs"
+	"github.com/beyondstorage/go-storage/v4/services"
+)
+
+srv, err := services.NewServicerFromString("obs://?credential=hmac:access_key_id:secret_access_key&endpoint=https:obs.<region>.myhuaweicloud.com")
+if err != nil {
+    log.Fatalf("obs new service: %v", err)
+}
+```
+
+Init storager (see [this page](../operations/index.md) for details)
+
+```go
+import (
+	_ "github.com/beyondstorage/go-service-obs"
+	"github.com/beyondstorage/go-storage/v4/services"
+)
+
+store, err := services.NewStoragerFromString("obs://<bucket_name>/path/to/workdir?credential=hmac:access_key_id:secret_access_key&endpoint=https:obs.<region>.myhuaweicloud.com")
+if err != nil {
+    log.Fatalf("obs new service: %v", err)
+}
+```
+
+## Implementation
+
+This service implements following interfaces:
+
+- [Servicer](../operations/servicer/index.md)
+
+- [Storager](../operations/storager/index.md)
+