Add bazel.completion.queryScope to scope completion target query

[runchen0919]

Summary

Add a new bazel.completion.queryScope configuration option that allows users to limit the Bazel query used by the completion provider to specific package patterns, instead of always querying the entire workspace.

Motivation

In large monorepos, the completion provider currently runs kind('.* rule', ...) which queries all targets in the workspace. This can be slow and return irrelevant results when a user only cares about a subset of packages.

Proposed Change

Add a new setting bazel.completion.queryScope (type: string[], default: []) under the bazel.completion namespace.

• When empty (default), the existing behavior is preserved — the entire workspace is queried (kind('.* rule', ...))
• When non-empty, the query is scoped to the specified patterns via union, e.g. ["//src/...", "//lib/..."] → kind('.* rule', //src/... + //lib/...)

Example configuration

"bazel.completion.queryScope": ["//src/...", "//lib/..."]

Difference from bazel.commandLine.queryExpression

Setting	Type	Controls
bazel.commandLine.queryExpression	string	Workspace tree view & quick picker
bazel.completion.queryScope	string[]	BUILD file target auto-completion

These two settings are independent and control different features.

[cbandera]

Thanks for opening this issue. Since you already opened a PR, let's move the discussion of this issue there: #599 (comment)