fix: updating ingestion of refresh token to match desktop app

The desktop app and the web api were configured to supply the parameters
differently. It doesn't matter which one we choose so we went with form
parameters.

Author: ProgrammingByPermutation

src/Nullinside.Api/Controllers/UserController.cs

@@ -166,7 +166,7 @@ public async Task<RedirectResult> TwitchStreamingToolsLogin([FromQuery] string c
   [AllowAnonymous]
   [HttpPost]
   [Route("twitch-login/twitch-streaming-tools")]
-  public async Task<IActionResult> TwitchStreamingToolsRefreshToken(string refreshToken, [FromServices] ITwitchApiProxy api,
+  public async Task<IActionResult> TwitchStreamingToolsRefreshToken([FromForm]string refreshToken, [FromServices] ITwitchApiProxy api,
     CancellationToken token = new()) {
     string? siteUrl = _configuration.GetValue<string>("Api:SiteUrl");
     api.OAuth = new() {