feat(webfuse): provide code coverage (#32)

* added coverage generation

* adds script to create coverage report

* adds lcov to docker files

* moves coverage to .build

* uses cmake to generate coverage

* added trigger of codecov

* adds code coverage badge

* sets branch of coverage to master to prepare reintegration

* fixes some style issues

build/amd64-ubuntu-builder.dockerfile

@@ -15,6 +15,7 @@ RUN set -x \
        gdb \
        gdbserver \
        valgrind \
+       lcov \
        uuid-dev
 
 COPY src /usr/local/src

build/arm32v7-ubuntu-builder.dockerfile

@@ -18,6 +18,7 @@ RUN set -x \
        rsync \
        gdb \
        gdbserver \
+       lcov \
        uuid-dev
 
 COPY src /usr/local/src