New Regions (EU866, EU_NARROW) + New Presets (Lite, Narrow) (#824)

* new new_presets

* Update comments for frequency bands

Per @fifieldt

* remove hamfast

* Clean up config.proto by removing extra newline

Removed unnecessary blank spaces before EU 866MHz comment.

* Removed US 433MHz Amateur Use band

removing ham settings for now.

* Update EU 866MHz band references and descriptions in config.proto

* Whitespace

* format again

---------

Co-authored-by: Thomas Göttgens <tgoettgens@gmail.com>

Author: NomDeTom

meshtastic/config.proto

@@ -939,6 +939,22 @@ message Config {
        * ITU Region 2 / 3 Amateur Radio 2m band (144-148 MHz)
        */
       ITU23_2M = 28;
+
+      /*
+       * EU 866MHz band (Band no. 47b of 2006/771/EC and subsequent amendments) for Non-specific short-range devices (SRD)
+       */
+      EU_866 = 29;
+
+      /*
+       * EU 874MHz and 917MHz bands (Band no. 1 and 4 of 2022/172/EC and subsequent amendments) for Non-specific short-range devices (SRD)
+       */
+      EU_874 = 30;
+      EU_917 = 31;
+
+      /*
+       * EU 868MHz band, with narrow presets
+       */
+      EU_N_868 = 32;
     }
 
     /*
@@ -1000,6 +1016,35 @@ message Config {
        * This preset performs similarly to LongFast, but with 500Khz bandwidth.
        */
       LONG_TURBO = 9;
+
+      /*
+       * Lite Fast
+       * Medium range preset optimized for EU 866MHz SRD band with 125kHz bandwidth.
+       * Comparable link budget to MEDIUM_FAST but compliant with Band no. 47b of 2006/771/EC.
+       */
+      LITE_FAST = 10;
+
+      /*
+       * Lite Slow
+       * Medium-to-moderate range preset optimized for EU 866MHz SRD band with 125kHz bandwidth.
+       * Comparable link budget to LONG_FAST but compliant with Band no. 47b of 2006/771/EC.
+       */
+      LITE_SLOW = 11;
+
+      /*
+       * Narrow Fast
+       * Medium-to-moderate range preset optimized for EU 868MHz band with 62.5kHz bandwidth.
+       * Comparable link budget to SHORT_SLOW, but with half the data rate.
+       * Intended to avoid interference with other devices.
+       */
+      NARROW_FAST = 12;
+
+      /*
+       * Narrow Slow
+       * Moderate range preset optimized for EU 868MHz band with 62.5kHz bandwidth.
+       * Comparable link budget and data rate to LONG_FAST.
+       */
+      NARROW_SLOW = 13;
     }
 
     enum FEM_LNA_Mode {