feat: [places] add more fuel type enum values (#5981)

* feat: add more fuel type enum values
docs: A comment for enum value `LPG` in enum `FuelType` is changed to be clearer.

PiperOrigin-RevId: 719418262

Source-Link: googleapis/googleapis@e49749f

Source-Link: googleapis/googleapis-gen@9293b9d
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packages/google-maps-places/protos/google/maps/places/v1/fuel_options.proto

@@ -40,6 +40,9 @@ message FuelOptions {
       // Diesel fuel.
       DIESEL = 1;
 
+      // Diesel plus fuel.
+      DIESEL_PLUS = 19;
+
       // Regular unleaded.
       REGULAR_UNLEADED = 2;
 
@@ -73,7 +76,7 @@ message FuelOptions {
       // SP 100.
       SP100 = 12;
 
-      // LPG.
+      // Liquefied Petroleum Gas.
       LPG = 13;
 
       // E 80.
@@ -82,6 +85,9 @@ message FuelOptions {
       // E 85.
       E85 = 15;
 
+      // E 100.
+      E100 = 20;
+
       // Methane.
       METHANE = 16;