added DigitalSequence and PulseReader (#2070)

* added DigitalSequence to chain multiple DigitalSignals
added PulseReader for hardware assisted digital signal sampling
* added send_time option to start a signal at a specific DWT->CYCCNT value
* fixed linter errors and undone function renaming
* fixed renaming
* flagged functions in api_symbols.csv
* allow gpio field to stay uninitialized in digital_signal_prepare_arr()
* fix test cases to match (expected) implementation
* pulse_reader: build as static library
Signed-off-by: g3gg0.de <git@g3gg0.de>
* fix starting level detection in pulse_reader
* added unit test for pulse_reader
* change pulse reader test timings to 1, 10 and 100 ms
* fine tuned timings for pulse_reader test
* pulse_reader_stop now deinits GPIO as recommended by @gornekich
* ran format_py
* pulse_reader: remove from API, allow to link with faps
Signed-off-by: g3gg0.de <git@g3gg0.de>
* remove unit test for pulse_reader again
* pulse_reader: add call to set GPIO pull direction
* make structures private, add C implementation of digital_signal_update_dma()
* digital_signal/pulse_reader: allow parameters for free to be NULL
* digital_signal: show unoptimized and optimized code for digital_signal_update_dma() next to each other
* pulse_reader: further optimize assembly code
* digital_signal: reduce code complexity of digital_signal_update_dma() by only reconfiguring DMA2
* digital_signal: remove assembly code, limiting the performance but increasing portability
* added recovery if the timer already expired
* digital_signal: fix memory leak
* digital_signal: keep lock until all DMA transfers have finished
* DigitalSequence: fix issues with concatenation of same levels and spurious bit flips
* DigitalSignal: use cyclic DMA buffer for sequences
* update api_symbols.csv
* Update api_symbols.csv for f18 target
* Patches from @gornekich to fix linter warnings.
* Remove some redundant if checks
* Remove some magic numbers and reformat.
* Remove forced terminating edge.

Signed-off-by: g3gg0.de <git@g3gg0.de>
Co-authored-by: gornekich <n.gorbadey@gmail.com>
Co-authored-by: Tiernan Messmer <tiernan.messmer@gmail.com>
Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

firmware/targets/f18/api_symbols.csv

@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,26.1,,
+Version,+,26.2,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -156,6 +156,7 @@ Header,+,lib/stm32wb_hal/Inc/stm32wbxx_ll_tim.h,,
 Header,+,lib/stm32wb_hal/Inc/stm32wbxx_ll_usart.h,,
 Header,+,lib/stm32wb_hal/Inc/stm32wbxx_ll_utils.h,,
 Header,+,lib/stm32wb_hal/Inc/stm32wbxx_ll_wwdg.h,,
+Header,+,lib/pulse_reader/pulse_reader.h,,
 Header,+,lib/toolbox/args.h,,
 Header,+,lib/toolbox/crc32_calc.h,,
 Header,+,lib/toolbox/dir_walk.h,,
@@ -1575,6 +1576,15 @@ Function,+,protocol_dict_render_brief_data,void,"ProtocolDict*, FuriString*, siz
 Function,+,protocol_dict_render_data,void,"ProtocolDict*, FuriString*, size_t"
 Function,+,protocol_dict_set_data,void,"ProtocolDict*, size_t, const uint8_t*, size_t"
 Function,-,pselect,int,"int, fd_set*, fd_set*, fd_set*, const timespec*, const sigset_t*"
+Function,-,pulse_reader_alloc,PulseReader*,"const GpioPin*, uint32_t"
+Function,-,pulse_reader_free,void,PulseReader*
+Function,-,pulse_reader_receive,uint32_t,"PulseReader*, int"
+Function,-,pulse_reader_samples,uint32_t,PulseReader*
+Function,-,pulse_reader_set_bittime,void,"PulseReader*, uint32_t"
+Function,-,pulse_reader_set_pull,void,"PulseReader*, GpioPull"
+Function,-,pulse_reader_set_timebase,void,"PulseReader*, PulseReaderUnit"
+Function,-,pulse_reader_start,void,PulseReader*
+Function,-,pulse_reader_stop,void,PulseReader*
 Function,-,putc,int,"int, FILE*"
 Function,-,putc_unlocked,int,"int, FILE*"
 Function,-,putchar,int,int