build(epsilon/external_app): track headers changes in external_app.mak

build(epsilon/external_app): update path to emdsk-version

build: restore rdynamic flag

docs: update logo path

refactor: move epsilon README to root

ci(epsilon): disable tests on windows

ci(coverage): remove workflow

ci(external_apps): remove unused step

ci(epsilon): adapt ignored paths

ci: adapt to github runners

ci: remove ccache related instructions

ci: remove condition on advanced jobs

ci(build-device): build userland only

ci: remove workflows for public repo

test(poincare): reduce number of significant digits for windows approx