[Feature Request]: support eclipse formatter

### spotless-cli version (if relevant)

_No response_

### Describe the feature

i would like to see support for eclipse formatter because google formatter:

a) messes up /// and // formatting used by jbang :)
b) can't be configured with something I can use across all IDE's
c) its what I use in jbang so coupled with #10 could make easy formatting without relying on build specific limits.

:)

### Motivation and use case

I use eclipse formatter, not google-java-format

### Alternatives considered

_No response_

### Feature scope

{"label" => "This should be implemented in `spotless-cli`."}

從 spotless-cli 的實作開始，了解現有的 Google Java formatter 支援如何透過 CLI 暴露。確定 Eclipse formatter 所需的輸入與設定行為，然後驗證 issue 中描述的 JBang 指令範例可以正常格式化，並且在不同 IDE 之間仍然可用。

由索引模型根據 Issue 內容生成。