chore: Improve error messages

currently:

> stackablectl stack install trino-iceberg
An unrecoverable error occured: failed to execute stack (sub)command

Caused by these errors (recent errors listed first):
 1: failed to install stack
 2: stack resource requests error
 3: failed to create kube client
 4: failed to create Kubernetes client
 5: Failed to infer configuration
 6: failed to infer config
 7: failed to determine current context

This is a bit cryptic. it would be good to catch this error and print a more readable message like "could not connect to Kubernetes cluster" or "No Kubernetes configuration found" or something like that. Possibly with context information like "tried connecting to ..." or "tried reading file at ..."

从 stackablectl stack install trino-iceberg 命令开始，跟踪报告的 Kubernetes 客户端和配置推断错误。完成标准是将晦涩的嵌套错误链替换为易于理解的消息，例如连接或缺少配置方面的指导，并在可用时包含相关上下文。