api(jsonrpc): add id to ProviderInfo

deltachat-jsonrpc/src/api/types/provider_info.rs

@@ -6,6 +6,8 @@ use typescript_type_def::TypeDef;
 #[derive(Serialize, TypeDef, schemars::JsonSchema)]
 #[serde(rename_all = "camelCase")]
 pub struct ProviderInfo {
+    /// Unique ID, corresponding to provider database filename.
+    pub id: String,
     pub before_login_hint: String,
     pub overview_page: String,
     pub status: u32, // in reality this is an enum, but for simplicity and because it gets converted into a number anyway, we use an u32 here.
@@ -14,6 +16,7 @@ pub struct ProviderInfo {
 impl ProviderInfo {
     pub fn from_dc_type(provider: Option<&Provider>) -> Option<Self> {
         provider.map(|p| ProviderInfo {
+            id: p.id.to_owned(),
             before_login_hint: p.before_login_hint.to_owned(),
             overview_page: p.overview_page.to_owned(),
             status: p.status.to_u32().unwrap(),