feat(Wind): Add chat language models and agent plugins home to sandbox config

Add `languageModelsResource` (path `/User/chatLanguageModels.json`) and `agentPluginsHome` (path `/User/agent-plugins`) to the sandbox configuration in ResolveConfiguration, extending the resource mapping for both the empty and full config presets. These entries follow the existing `mcpResource` pattern, using the `vscode-userdata` scheme.

Reformat all ESBuild configuration modules under `Configuration/ESBuild/`, `Source/ESBuild.js`, and the barrel files to use 2-space indentation, reverting the tab conversion from the previous commit. Import ordering is adjusted to place external modules before local ones, and export blocks are consolidated to multi-line form across all affected files.

No pipeline-affecting changes to the build configuration.

Author: NikolaRHristov