fix: correct callback logic on debuggin (#699)

Author: ckipp01

lua/metals.lua

@@ -33,7 +33,8 @@ local function execute_command(command_params, callback)
       if client_id ~= metals_id then
         return
       elseif callback then
-        callback(response.err, response.ctx.method, responses)
+        local context = response.ctx and response.ctx.method or ""
+        callback(response.err, context, response)
       elseif response.err then
         log.error_and_show(string.format("Could not execute command: %s", response.err.message))
       end

lua/metals/setup.lua

@@ -135,7 +135,7 @@ local function setup_dap(execute_command)
       -- really capture or care about the err and instead just make sure res is
       -- there and not null.
       if res then
-        local port = util.split_on(res.uri, ":")[3]
+        local port = util.split_on(res.result.uri, ":")[3]
 
         callback({
           type = "server",