ref. 6af2bad123
2.3.0 is still not supported, but at least buildable

ref.
https://github.com/Portisch/RF-Bridge-EFM8BB1/wiki/0xA2 (desc: Learning OK)
https://github.com/Portisch/RF-Bridge-EFM8BB1/wiki/0xA3 (desc: Learning failed)
were used, but the pages did not reflect the actual implementation:

af1bddb3d8/inc/uart.h
...
RF_CODE_LEARN_KO = 0xA2
RF_CODE_LEARN_OK = 0xA3
...

- no need in template when size set as constexpr
- remove size param completely, deduce size based on buffer

- queueing efm8bb1 msg, pass around array as reference since the size is fixed
- make use of learn timestamp

- for some reason we were never checking it's output
no need to increase +1 since we write the exact number
- allow hexEncode output be decoded, enforce even-ness
- raw msg must have at least 3 bytes - start+code+end

- RF_... -> RFB_...
- rework rcswitch integration, support variable length payload
- rework rfbridge parser (not tested)
- rework settings scanning routine when trying to match rf payload
  with the relay ID
- update build tests

resolve #2326

As this is no longer an option since PIO 4.4.0
ref.
04694b4126
https://docs.platformio.org/en/latest/core/history.html

*...I have known you for so long
When we ran in circles...*

Correct manufacturer on HASSIO discovery + build error for IR TX not in raw mode

Per PR comment:
> I'm running simple 1-channel led dimmer and couldn't get brightness control working, as it was called only if lightHasColor().
> This PR changes conditions slightly, and allows domoticz's dimmer device to control brightness as well. I think this device type is more appropriate/comfortable in this case."

- remove lightHasColor() check, try to parse the payload and manually adjust the channels
- when domoticz payload does not have "Color" field, still fall-through to the brightness update

- share relay dummypin instance between relay objects, replace unique_ptr with basic pointer (as we never destroy things, everything is brought up on boot and is essentially static)
- reduce overall size of the Api (web_api_t) structure, store a single required unsigned char id inside of the Api object itself.
- drop std::function for the same reason, current implementation only needs a single u8 ID in all cases
- tweak internal functions to expect a certain path size, drop strange comparisons with sprintf return value
- (kind of a hack) add manual calls to vector<Api>::reserve() as we go over the current capacity and vector increases it's size times 2. e.g. for 9 relays, we would allocate space for 32 Api objects as vector size goes from 16 to 32, after we add 18 Api objects with relay + pulse
- (breaking) json calls on a separate path, don't waste time encoding a single entity as json object when we can encode more things
- rfbridge API learn will return the current status instead of a plain OK

Remember MAC for the current IP sequence number
(e.g. lease 0 -> xxx.xxx.xxx.2, lease 1 -> xxx.xxx.xxx.3 and etc.)

~500 bytes of code

As codacy points out, move stype and switchType to the LIGHT_PROVIDER != NONE block

- reduce overall size of the structure, store a single required entity
  inside of Api object itself.
- tweak internal functions to expect a certain path size
- (kind of a hack) add manual calls to vector<Api>::reserve() as we go over
  the current capacity and vector increases it's size times 2.
  e.g. for 9 relays, we would allocate space for 32 Api objects
  when vector size goes from 16 to 32, after we add 18 Api objects with relay + pulse
- (breaking) json calls on a separate path, don't waste time encoding
  a single entity as json object when we can encode more things

- no need for smartptr when instance is static
- default ctor, set default values in the body

Co-authored-by: mkozlowski <gitcmt@empeka.pl>

* rpn: bump to rpnlib 0.24.1

- `i` and `u` suffixes for numbers in expressions, parse as Integer or Unsigned respectively
- `checkedTo...()` method variants for numeric conversions
- strings can contain escape sequences (\x61\x62\x63, \n, \t, \r)
- improve float number parsing
- more consistent whitespace checks, tokens also can be separated by \n or \t
- various parser fixes

* fix captures

ref.
https://github.com/platformio/platform-espressif8266/issues/224#issuecomment-667053958
https://bintray.com/platformio/dl-packages/toolchain-xtensa/2.100100.200706