Decrease visibility of username generators (#516)

The username generators had excessive visibility and we can make them
internal to the crate.

Author: Hinton

crates/bitwarden-generators/src/username.rs

@@ -120,7 +120,7 @@ pub enum UsernameGeneratorRequest {
 impl ForwarderServiceType {
     /// Generate a username using the specified email forwarding service
     /// This requires an HTTP client to be passed in, as the service will need to make API calls
-    pub async fn generate(
+    async fn generate(
         self,
         http: &reqwest::Client,
         website: Option<String>,

crates/bitwarden-generators/src/username_forwarders/addyio.rs

@@ -2,7 +2,7 @@ use reqwest::{StatusCode, header::CONTENT_TYPE};
 
 use crate::username::UsernameError;
 
-pub async fn generate(
+pub(crate) async fn generate(
     http: &reqwest::Client,
     api_token: String,
     domain: String,

crates/bitwarden-generators/src/username_forwarders/duckduckgo.rs

@@ -2,7 +2,10 @@ use reqwest::{StatusCode, header::CONTENT_TYPE};
 
 use crate::username::UsernameError;
 
-pub async fn generate(http: &reqwest::Client, token: String) -> Result<String, UsernameError> {
+pub(crate) async fn generate(
+    http: &reqwest::Client,
+    token: String,
+) -> Result<String, UsernameError> {
     generate_with_api_url(http, token, "https://quack.duckduckgo.com".into()).await
 }
 

crates/bitwarden-generators/src/username_forwarders/fastmail.rs

@@ -5,15 +5,15 @@ use serde_json::json;
 
 use crate::username::UsernameError;
 
-pub async fn generate(
+pub(crate) async fn generate(
     http: &reqwest::Client,
     api_token: String,
     website: Option<String>,
 ) -> Result<String, UsernameError> {
     generate_with_api_url(http, api_token, website, "https://api.fastmail.com".into()).await
 }
 
-pub async fn generate_with_api_url(
+async fn generate_with_api_url(
     http: &reqwest::Client,
     api_token: String,
     website: Option<String>,

crates/bitwarden-generators/src/username_forwarders/firefox.rs

@@ -5,7 +5,7 @@ use reqwest::{
 
 use crate::username::UsernameError;
 
-pub async fn generate(
+pub(crate) async fn generate(
     http: &reqwest::Client,
     api_token: String,
     website: Option<String>,

crates/bitwarden-generators/src/username_forwarders/forwardemail.rs

@@ -2,7 +2,7 @@ use reqwest::{StatusCode, header::CONTENT_TYPE};
 
 use crate::username::UsernameError;
 
-pub async fn generate(
+pub(crate) async fn generate(
     http: &reqwest::Client,
     api_token: String,
     domain: String,

crates/bitwarden-generators/src/username_forwarders/simplelogin.rs

@@ -2,7 +2,7 @@ use reqwest::{StatusCode, header::CONTENT_TYPE};
 
 use crate::username::UsernameError;
 
-pub async fn generate(
+pub(crate) async fn generate(
     http: &reqwest::Client,
     api_key: String,
     base_url: String,