Support rectangular area sequences (`DECFRA`, `DECERA`, etc)

[alexrp]

• https://vt100.net/docs/vt510-rm/DECFRA.html
• https://vt100.net/docs/vt510-rm/DECERA.html
• https://vt100.net/docs/vt510-rm/DECSERA.html
• https://vt100.net/docs/vt510-rm/DECCRA.html
• https://vt100.net/docs/vt510-rm/DECCARA.html
• https://vt100.net/docs/vt510-rm/DECRARA.html
• https://vt100.net/docs/vt510-rm/DECSACE.html
• Add support for the rectangular area operations microsoft/terminal#14112

[alexrp]

It's unclear what a "character" is for the purposes of these sequences...

[alexrp]

It's unclear what a "character" is for the purposes of these sequences...

https://github.com/microsoft/terminal/blob/63c3573a13cc96bfa3d655f0f1898ae250e2fe35/src/terminal/adapter/adaptDispatch.cpp#L1288-L1294