Implement EGL_TELEMETRY_HINT_ANDROID in EGL loader

We want eglCreateContext telemetry to give us insights into how
developers use EGL. Implement the new EGL_TELEMETRY_HINT_ANDROID extension to allow us to remove HWUI contexts from telemetry

Test: Tested with new dEQP tests to be merged separately
Test: ran dEQP-EGL.functional.create_context_ext* tests
Bug: 347911216
Flag: EXEMPT flag is used in linked CL
Change-Id: If987c9eb144a380d90fb129f3f49effce73b33df