pinDropDown: make reserved and read only aware and disable if needed

AudioReactive: add disableROPins on WS, SCK, MCLK and SCL
4LD:  add disableROPins  on CLK

settingsum: 
- addfield: max 49 pins, if (global interface) also disabled, rename if to global, show 🔴 if pin claimed
- add disableROPins
- pinDropdownsPost
- rename SDA to if:SDA (etc) so it is part of claimed pins (also in set.cpp and xml.cpp)

xml.cpp:
- appendGPIOinfo(): get rsvd and ro_gpio from pinManager.isPinOk instead of hardcoded
- getSettingsJS: add pinDropdownsPost

usermods/audioreactive/audio_reactive.h

@@ -2105,14 +2105,17 @@ class AudioReactive : public Usermod {
       oappend(SET_F("xOption('AudioReactive:digitalmic:pin[]',0,' ⎌',")); oappendi(I2S_SDPIN); oappend(");"); 
     #endif
       oappend(SET_F("addInfo('AudioReactive:digitalmic:pin[]',1,'<i>ws/clk/lrck</i>','I2S WS');"));
+      oappend(SET_F("disableROPins('AudioReactive:digitalmic:pin[]',1);")); 
     #ifdef I2S_WSPIN
       oappend(SET_F("xOption('AudioReactive:digitalmic:pin[]',1,' ⎌',")); oappendi(I2S_WSPIN); oappend(");"); 
     #endif
       oappend(SET_F("addInfo('AudioReactive:digitalmic:pin[]',2,'<i>sck/bclk</i>','I2S SCK');"));
+      oappend(SET_F("disableROPins('AudioReactive:digitalmic:pin[]',2);")); 
     #ifdef I2S_CKPIN
       oappend(SET_F("xOption('AudioReactive:digitalmic:pin[]',2,' ⎌',")); oappendi(I2S_CKPIN); oappend(");"); 
     #endif
       oappend(SET_F("addInfo('AudioReactive:digitalmic:pin[]',3,'<i>master clock</i>','I2S MCLK');"));
+      oappend(SET_F("disableROPins('AudioReactive:digitalmic:pin[]',3);")); 
     #if !defined(CONFIG_IDF_TARGET_ESP32S2) && !defined(CONFIG_IDF_TARGET_ESP32C3) && !defined(CONFIG_IDF_TARGET_ESP32S3)
       oappend(SET_F("dOptions('AudioReactive:digitalmic:pin[]',3,2,2);")); //only use -1, 0, 1 or 3
       oappend(SET_F("dOptions('AudioReactive:digitalmic:pin[]',3,4,39);")); //only use -1, 0, 1 or 3
@@ -2121,6 +2124,7 @@ class AudioReactive : public Usermod {
       oappend(SET_F("rOption('AudioReactive:digitalmic:pin[]',4,'use global (")); oappendi(i2c_sda); oappend(")',-1);"); 
       oappend(SET_F("addInfo('AudioReactive:digitalmic:pin[]',5,'','I2C SCL');"));
       oappend(SET_F("rOption('AudioReactive:digitalmic:pin[]',5,'use global (")); oappendi(i2c_scl); oappend(")',-1);"); 
+      oappend(SET_F("disableROPins('AudioReactive:digitalmic:pin[]',5);")); 
     }
 
 

usermods/usermod_v2_four_line_display_ALT/usermod_v2_four_line_display_ALT.h

@@ -1058,6 +1058,7 @@ class FourLineDisplayUsermod : public Usermod {
       bool isSPI = (type == SSD1306_SPI || type == SSD1306_SPI64);
       // WLEDMM add defaults
       oappend(SET_F("addInfo('4LineDisplay:pin[]',0,'','I2C/SPI CLK');"));
+      oappend(SET_F("disableROPins('4LineDisplay::pin[]',0);")); 
     #ifdef FLD_PIN_SCL
       oappend(SET_F("xOption('4LineDisplay:pin[]',0,' ⎌',")); oappendi(FLD_PIN_SCL); oappend(");"); 
     #endif