any plans to add input method options for other languages

[arabeskk]

hi developers, i've been using this app for years, amazing app, thank you so much!!
Just wondering if you guys have plans to add support for switching to other language input methods in one key, such as pressing left 'control' key that switch to chinese or french, since currently it seems unable to add other languages except for かな and 英数, and systematic previous or next input source option tends to be inconvenient in some cases, hoping you guys could take it into consideration, appreciate it, thank you!!