feat(gradle): analyze a Gradle project's dependencies per configuration (#1181)

The Dependency Analyzer lists Gradle projects next to Maven modules. For a Gradle project it runs `<project>:dependencies --configuration <name>` (compile/runtime/test classpaths) in the background (on the project host for remote projects), cancellable and cached per session, and reuses the list/tree views, search, conflicts-only filter and usage paths: an exact request Gradle replaced (1.0 -> 1.1) is a conflict showing the requested version, constraints are left out, unresolved dependencies are marked and build projects (quoted or not) are recognised. Exclude / Jump to Source stay Maven-only. Opened from the Gradle tool window toolbar, a Gradle project's context menu and a build script's menus.

Closes #1005

src/features/build-tools/DependencyAnalyzer.module.css

@@ -20,7 +20,7 @@
   max-width: 260px;
 }
 .search {
-  flex: 1 1 200px;
+  flex: 1 1 140px;
   min-width: 140px;
   max-width: 360px;
 }
@@ -203,3 +203,10 @@
 .stepTarget {
   color: var(--fg-strong);
 }
+
+.errorText {
+  max-width: 560px;
+  white-space: pre-wrap;
+  overflow-wrap: anywhere;
+  color: var(--fg-muted);
+}