allow to mute and unmute tabs and get mute status into tab info

tests/test_tabs.py

@@ -12,6 +12,7 @@ def test_tabs_list(browser):
     assert "windowId" in first
     assert "url" in first
     assert "title" in first
+    assert "muted" in first
 
 
 def test_tabs_count(browser):
@@ -114,3 +115,21 @@ def test_tabs_merge_windows_no_crash(browser):
     result = browser("tabs.merge_windows")
     assert isinstance(result, dict)
     assert "moved" in result
+
+
+def test_tabs_mute_and_unmute(browser, http_tab):
+    muted = browser("tabs.mute", {"tabId": http_tab["id"]})
+    assert isinstance(muted, dict)
+    assert muted["tabId"] == http_tab["id"]
+    assert muted["muted"] is True
+    listed = browser("tabs.list")
+    listed_tab = next(t for t in listed if t["id"] == http_tab["id"])
+    assert listed_tab["muted"] is True
+
+    unmuted = browser("tabs.unmute", {"tabId": http_tab["id"]})
+    assert isinstance(unmuted, dict)
+    assert unmuted["tabId"] == http_tab["id"]
+    assert unmuted["muted"] is False
+    listed = browser("tabs.list")
+    listed_tab = next(t for t in listed if t["id"] == http_tab["id"])
+    assert listed_tab["muted"] is False