[viewcompiler] Add static field get instructions to DexBuilder

This allows us to generate code that can read static fields in a class. Once we
include several other field operations, we will be able to generate more
specialized inflation code in the view compiler.

Bug: 111895153
Change-Id: Ia11195b1cea6d5a3ddbc60d972922586a062c853

• startop/view_compiler/dex_builder.cc[diff]
• startop/view_compiler/dex_builder.h[diff]
• startop/view_compiler/dex_builder_test/Android.bp[diff]
• startop/view_compiler/dex_builder_test/src/android/startop/test/DexBuilderTest.java[diff]
• startop/view_compiler/dex_builder_test/src/android/startop/test/TestClass.java[Added - diff]
• startop/view_compiler/dex_testcase_generator.cc[diff]