chore: 初始化 Slurm Go SDK 项目骨架和核心客户端

添加 Go 模块定义、.gitignore、包文档、HTTP Client 核心、Token 认证和错误处理。

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

internal/slurm/slurm.go

@@ -0,0 +1,18 @@
+// Package slurm provides a Go client for the Slurm REST API (v0.0.40).
+//
+// The client handles authentication via X-SLURM-USER-NAME and X-SLURM-USER-TOKEN
+// headers, request/response marshaling, and error handling.
+//
+// Basic usage:
+//
+//	httpClient := &http.Client{
+//		Transport: &slurm.TokenAuthTransport{
+//			UserName: "slurm",
+//			Token:    "your-token",
+//		},
+//	}
+//	client, err := slurm.NewClient("http://localhost:6820", httpClient)
+//	if err != nil {
+//		log.Fatal(err)
+//	}
+package slurm