Add boosted_hex_device_type_v1 for HIP-109

The first iteration of HIP-109[1] adds the ability to boost by a device
type. Pre-existing boosts will continue to boost _all_ device types.

From the way the HIP reads, at some point, a hex may be boosted by the
same provider for multiple device types. It was undecided wether that
would be implemented as multiple device_types attached to a boosted hex,
or multiple instances of a boosted hex.

[1]: https://github.com/helium/HIP/blob/main/0109-hex-boosting-by-deployment.md

src/hex_boosting.proto

@@ -23,6 +23,8 @@ message boosted_hex_info_v1 {
   bytes boost_config_pubkey = 7;
 
   uint32 version = 8;
+  // The device type(s) this boost applies to.
+  boosted_hex_device_type_v1 device_type = 9;
 }
 
 message boosted_hex_update_v1 {
@@ -31,3 +33,11 @@ message boosted_hex_update_v1 {
   // Details of the updated hex
   boosted_hex_info_v1 update = 2;
 }
+
+enum boosted_hex_device_type_v1 {
+  all = 0;
+  cbrs_indoor = 1;
+  cbrs_outdoor = 2;
+  wifi_indoor = 3;
+  wifi_outdoor = 4;
+}

src/lib.rs

@@ -9,9 +9,9 @@ pub use prost::{DecodeError, EncodeError, Message};
 #[cfg(feature = "services")]
 pub mod services {
     use crate::{
-        BlockchainRegionParamsV1, BlockchainTokenTypeV1, BlockchainTxn, BoostedHexInfoV1, DataRate,
-        Decimal, EntropyReportV1, GatewayStakingMode, MapperAttach, Region, RoutingAddress,
-        ServiceProvider,
+        BlockchainRegionParamsV1, BlockchainRegionParamsV1, BlockchainTokenTypeV1, BlockchainTxn,
+        BoostedHexDeviceTypeV1, BoostedHexInfoV1, BoostedHexUpdateV1, DataRate, Decimal,
+        EntropyReportV1, GatewayStakingMode, MapperAttach, Region, RoutingAddress, ServiceProvider,
     };
 
     pub mod iot_config {