Module configuration support

Issue không nêu rõ các tệp cấu hình, bài kiểm thử hoặc các điểm vào của phần triển khai. Hãy bắt đầu bằng cách xác định phần xử lý cấu hình VS Code của extension và các thiết lập workspace/classpath hiện có, sau đó xác định cách các ghi đè ở cấp module sẽ phù hợp với mô hình hiện tại. Phần hoàn thành cần bao gồm các classpath riêng cho từng module với cơ chế fallback về workspace và user, cùng các bài kiểm thử cho các quy tắc ưu tiên.

Type: Feature Request

Feature Request: Support for Classpath Configuration per Module
Summary
The Read Heat extension currently supports only a single workpsace classpath configuration. This becomes limiting in multi‑module Java projects, where each module may require a different classpath. I would like to propose extending the configuration model to align with the standard VS Code configuration hierarchy: User → Workspace → Module (new).

Problem Description
In complex Java workspaces, especially those containing multiple independent modules, the extension does not allow defining a classpath per module. As a result:

• All modules must share the same classpath, even when they have different dependency sets.
• Workspace‑level configuration cannot be overridden for specific modules.
• The extension becomes difficult to use in real‑world multi‑module setups.
  For example, I may have a workspace configured on User level for JDK 21, but a specific workpsace require JDK 1.8 and each module requires a different classpath or additional libraries. Currently, there is no way to express this.

Proposed Solution
Introduce a hierarchical configuration model consistent with VS Code’s philosophy:

1. User-level configuration
   Global defaults for all workspaces.
2. Workspace-level configuration
   Overrides user settings for the current workspace.
3. Module-level configuration
   A new level of configuration that applies to a specific Java module and can override both workspace and user settings.
   This would allow each module to define its own classpath while still inheriting defaults when appropriate.

Expected Behavior

• If a module defines its own classpath, the extension uses that configuration.
• If not, the workspace configuration is used.
• If neither module nor workspace defines a classpath, the user-level configuration applies.
• This mirrors how VS Code handles settings for other languages and extensions.

Benefits

• Better support for multi-module Java projects.
• Cleaner and more maintainable configuration.
• Behavior consistent with VS Code’s established configuration hierarchy.
• Allows mixed JDK environments or module-specific dependency sets.

Extension version: 1.52.0
VS Code version: Code 1.109.4 (c3a26841a84f20dfe0850d0a5a9bd01da4f003ea, 2026-02-16T15:35:57.932Z)
OS version: Windows_NT x64 10.0.26200
Modes: