Add service provider promotion fund

Also adds strum so we can target enums who's variants we want to iterate
over.
This way, we don't have to hardcode a vec of service providers whenever
one is added to proto.

Cargo.toml

@@ -32,6 +32,8 @@ bytes = { workspace = true }
 prost = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
+strum = { version = "0.26.3", features = ["derive"] }
+strum_macros = "0.26.4"
 
 [build-dependencies]
 tonic-build = { workspace = true, optional = true }

build.rs

@@ -36,6 +36,10 @@ macro_rules! config {
     ($config:expr) => {
         $config
             .type_attribute(".", "#[derive(serde::Serialize, serde::Deserialize)]")
+            .enum_attribute(
+                ".helium.service_provider",
+                "#[derive(strum_macros::EnumIter)]",
+            )
             .field_attribute(
                 ".helium.tagged_spreading.region_spreading",
                 "#[serde(with = \"serde_region_spreading\" )]",

src/lib.rs

@@ -5,6 +5,7 @@ include!(concat!(env!("OUT_DIR"), "/helium.rs"));
 
 pub use blockchain_txn::Txn;
 pub use prost::{DecodeError, EncodeError, Message};
+pub use strum::IntoEnumIterator;
 
 #[cfg(feature = "services")]
 pub mod services {

src/service_provider.proto

@@ -5,3 +5,17 @@ package helium;
 enum service_provider {
   helium_mobile = 0;
 }
+
+message service_provider_promotion_fund_v1 {
+  /// The timestamp for this report in milliseconds since unix epoch
+  uint64 timestamp = 1;
+
+  /// Service Provider that is allocating funds for promotions
+  service_provider service_provider = 2;
+
+  /// Percentage of Rewards allocated for promotions
+  /// stored in Basis Points
+  ///
+  /// https://www.investopedia.com/terms/b/basispoint.asp
+  uint32 bps = 3;
+}