`input` configuration to pass input as stdin on startup (#7652)

This adds a new configuration `input` that allows passing either raw
text or file contents as stdin when starting the terminal.

The input is sent byte-for-byte to the terminal, so control characters
such as `\n` will be interpreted by the shell and can be used to run
programs in the context of the loaded shell. After the input is sent, it
switches to `stdin` as usual.

Example: `ghostty --input="hello, world\n"` will start the your default
shell, run `echo hello, world`, and then show the prompt

The `--input` configuration can be repeated to send multiple data
concatenated directly to together. Values can be also be prefixed with
`file:` to send a file contents, e.g. `file:data.txt`. File contents are
limited to 10MB to prevent excessive memory usage and avoid malicious
use. Beyond that, users should write their own script...

This is all in pursuit of #7647, but we're not there yet.

0 files changed, 0 insertions, 0 deletions