Paste results from history to current calculation

[ghost]

Checklist

• [X] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• [X] I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• [X] I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• [X] I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• [X] This issue contains only one feature request.
• [X] I have read and understood the contribution guidelines.

Feature description

Similar to #28, Fossify Calculator has a history of calculations you made, however you can't really "paste" these in to your current calculations.

For example if you did 1+1=2 this saves 2 in history, but if now want to do 3 + and want to add the 2 from history, you cannot, it just changes to 2 instead of adding 2 or giving the option to add 2 to the current calculation.

Why do you want this feature?

Convenience and functionality, instead of needing to check the history and then manually input the previous result you can just paste it in directly, makes accounting easier.

Additional information

These are technically two different features even if the basis is similar so as per guidelines, it's separated.