bp2build: Add support for export_.*headers props

Soong supports export_.*_headers properties, the libraries contained in
this list must also be within a shared/static/whole_static/header libs
property. For bp2build, we eliminate this duplication. The libraries
not listed in an export_.*_headers property will migrate to an attribute
prepended with implementation_, those in export_.*_headers will not have
a prefix.

Test: build/bazel/ci/bp2build.sh
Test: build/bazel/ci/mixed_libc.sh
Bug: 198241472
Change-Id: I3eb84c983ec5d241c8a568e411dfd5619d3184a7
diff --git a/cc/library_headers.go b/cc/library_headers.go
index b335035..f88b801 100644
--- a/cc/library_headers.go
+++ b/cc/library_headers.go
@@ -135,8 +135,8 @@
 	attrs := &bazelCcLibraryHeadersAttributes{
 		Export_includes:        exportedIncludes.Includes,
 		Export_system_includes: exportedIncludes.SystemIncludes,
-		Implementation_deps:    linkerAttrs.deps,
-		Deps:                   linkerAttrs.exportedDeps,
+		Implementation_deps:    linkerAttrs.implementationDeps,
+		Deps:                   linkerAttrs.deps,
 		System_dynamic_deps:    linkerAttrs.systemDynamicDeps,
 	}