add persist dialog and update remember to current API

Support remembering consent

Signed-off-by: Willow Barraco <contact@willowbarraco.fr>

add newline to error message

key_box: trim values longer than 50 chars

Update reference to deprecated meson method

Meson would previously print:

    hiprompt_gtk/meson.build:15: WARNING: Project targets '>=0.55.0' but
    uses feature deprecated since '0.55.0': ExternalProgram.path. use
    ExternalProgram.full_path() instead

Properly render keys which contain a dash

When one of the keys (as in key/value) contained a dash, it would not
render properly.

For example, for the entry `access-token!=123 proto=hut`, hiprompt would
render something like:

  access    (empty)
  -         (empty)
  token     (not shown)
  proto     hut

This is due to the dash not being considered a word character and being
split. This patch results in hiprompt rendering the expected prompt:

  access-token    (not shown)
  proto           hut

Async password feedback

Introduces Gio to tell the user that their password is being verified
instead of just freezing the GUI.

window.py: move button enable timeout setup into make_ui

Otherwise buttons are permanently disabled when decrypting on a hard
locked store.

Implement accepting with enter and denying with escape

Add timeout for enabling the grant buttons

Implement new prompter protocol

Implement 'delete' prompt mode

Fix handling of sys.stdin.readline() result

It includes the newline and not checking for it caused incorrect
password command to be interpreted as correct.

key.py: fix parsing of values with symbols

Fix install permissions for the launcher script

Add error reporting for unknown commands

Fix displaying the window in layer shell

Fix launching as a module

Fix meson build and installation

Remove forced border radius from the window

This creates a drawing bug in combination with the headerbar