New flexible usermod for seven segment displays (Aircoookie#2409)

* add first version

* added max/min brightness to autoldr functionality

* added more information to the readme

usermods/seven_segment_display_reloaded/readme.md

@@ -0,0 +1,129 @@
+# Seven Segment Display Reloaded
+
+Usermod that uses the overlay feature to create a configurable seven segment display.
+Optimized for maximum configurability and use with seven segment clocks by parallyze (https://www.instructables.com/member/parallyze/instructables/)
+Very loosely based on the existing usermod "seven segment display".
+
+
+## Installation
+
+Add the compile-time option `-D USERMOD_SSDR` to your `platformio.ini` (or `platformio_override.ini`) or use `#define USERMOD_SSDR` in `my_config.h`.
+
+For the auto brightness option, the usermod SN_Photoresistor has to be installed as well. See SN_Photoresistor/readme.md for instructions.
+
+## Settings
+All settings can be controlled the usermod setting page.
+Part of the settings can be controlled through MQTT with a raw payload or through a json request to /json/state.
+
+### enabled
+Enables/disables this overlay usermod
+
+### inverted
+Enables the inverted mode in which the background should be enabled and the digits should be black (leds off)
+
+### Colon-blinking
+Enables the blinking colon(s) if they are defined
+
+### enable-auto-brightness
+Enables the auto brightness feature. Can be only used with the usermod SN_Photoresistor installed.
+
+### auto-brightness-min / auto-brightness-max
+The lux value calculated from usermod SN_Photoresistor will be mapped to the values defined here.
+The mapping is 0 - 1000 lux will be mapped to auto-brightness-min - auto-brightness-max
+
+The mA current protection of WLED will override the calculated value if it is too high.
+
+### Display-Mask
+Defines the type of the time/date display. 
+For example "H:m" (default)
+- H - 00-23 hours
+- h - 01-12 hours
+- k - 01-24 hours
+- m - 00-59 minutes
+- s - 00-59 seconds
+- d - 01-31 day of month
+- M - 01-12 month
+- y - 21 last two positions of year
+- Y - 2021 year
+- : for a colon
+
+### LED-Numbers
+- LED-Numbers-Hours
+- LED-Numbers-Minutes
+- LED-Numbers-Seconds
+- LED-Numbers-Colons
+- LED-Numbers-Day
+- LED-Numbers-Month
+- LED-Numbers-Year
+
+See following example for usage.
+
+
+## Example
+
+Example for Leds definition
+```
+  <  A  >
+/\       /\
+F        B
+\/       \/
+  <  G  >
+/\       /\
+E        C
+\/       \/
+  <  D  >
+```
+
+Leds or Range of Leds are seperated by a comma ","
+
+Segments are seperated by a semicolon ";" and are read as A;B;C;D;E;F;G
+
+Digits are seperated by colon ":" -> A;B;C;D;E;F;G:A;B;C;D;E;F;G
+
+Ranges are defined as lower to higher (lower first)
+
+For example, an clock definition for the following clock (https://www.instructables.com/Lazy-7-Quick-Build-Edition/) is
+
+- hour "59,46;47-48;50-51;52-53;54-55;57-58;49,56:0,13;1-2;4-5;6-7;8-9;11-12;3,10"
+
+- minute "37-38;39-40;42-43;44,31;32-33;35-36;34,41:21-22;23-24;26-27;28,15;16-17;19-20;18,25"
+
+or
+
+- hour "6,7;8,9;11,12;13,0;1,2;4,5;3,10:52,53;54,55;57,58;59,46;47,48;50,51;49,56"
+
+- minute "15,28;16,17;19,20;21,22;23,24;26,27;18,25:31,44;32,33;35,36;37,38;39,40;42,43;34,41"
+
+depending on the orientation.
+
+# The example detailed:
+hour "59,46;47-48;50-51;52-53;54-55;57-58;49,56:0,13;1-2;4-5;6-7;8-9;11-12;3,10"
+
+there are two digits seperated by ":"
+
+- 59,46;47-48;50-51;52-53;54-55;57-58;49,56
+- 0,13;1-2;4-5;6-7;8-9;11-12;3,10
+
+In the first digit, 
+the **segment A** consists of the leds number **59 and 46**., **segment B** consists of the leds number **47, 48** and so on
+
+The second digit starts again with **segment A** and leds **0 and 13**, **segment B** consists of the leds number **1 and 2** and so on
+
+### first digit of the hour
+- Segment A: 59, 46
+- Segment B: 47, 48
+- Segment C: 50, 51
+- Segment D: 52, 53
+- Segment E: 54, 55
+- Segment F: 57, 58
+- Segment G: 49, 56
+
+### second digit of the hour
+
+- Segment A: 0, 13
+- Segment B: 1, 2
+- Segment C: 4, 5
+- Segment D: 6, 7
+- Segment E: 8, 9
+- Segment F: 11, 12
+- Segment G: 3, 10