tests/periph_timer: migrate to testrunner

test: periph_timer: check if argument is passed.

tests/thread_msg: migrate to testrunner

cpu + boards: add support for thunderboard sense

od: add ASCII representation

periph/rtc: move init from auto_init to periph_init

examples/pkgs: rename modules with duplicate names

dist/tools/pr_check: fix regex pattern to recognize any SHA

Root directory of libfixmath and u8g2 where the same as another directory.

examples/default: remove usage of config module

cpu/sam0: share GPIO configuration

makefiles: docker: make docker call non-interactive

cpu, sam3: fix periph/dac poweron

prevents "the input device is not a TTY"

cpu, atmega_common: add periph/adc

ld: refactor sam0 ldscripts

drivers: added soft SPI driver