Added native Bazel build to GUI2. Reduced a lot of the unused Angular CLI structures

Reviewers should look at the changes in WORKSPACE, BUILD, BUILD.bazel, README.md files
This is only possible now as rules_nodejs went to 1.0.0 on December 20
gui2 has now been made the entry point (rather than gui2-fw-lib)
No tests or linting are functional yet for Typescript
Each NgModule now has its own BUILD.bazel file with ng_module
gui2-fw-lib is all one module and has been refactored to simplify the directory structure
gui2-topo-lib is also all one module - its directory structure has had 3 layers removed
The big bash script in web/gui2/BUILD has been removed - all is done through ng_module rules
in web/gui2/src/main/webapp/BUILD.bazel and web/gui2/src/main/webapp/app/BUILD.bazel

Change-Id: Ifcfcc23a87be39fe6d6c8324046cc8ebadb90551
diff --git a/.bazelrc b/.bazelrc
index 6908e34..66fa12d 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -29,7 +29,7 @@
 build --incompatible_generated_protos_in_virtual_imports=false
 build --incompatible_depset_union=false
 
-common --experimental_allow_incremental_repository_updates
+build --define=angular_ivy_enabled=True
 
 test --test_summary=terse
 test --test_output=errors