auto: increment master version to 15.0.97

fix(windows): Welcome should always show in front

chore(android): Remove runConfigurations.xml files

fix(windows): handle restoring modal dialogs consistently

fix(linux): Handle corrupt icon file

fix(linux): Check for valid kmp file

fix(android): removes duplicated line

fix(android): keyboard's black bar bug

refactor(web): overhaul of OSK key layout calcs + styling, merges desktop & touch logic 📐

refactor(web): reworks VisualKeyboard layout spec design 📐

refactor(web): OSK layout hierarchy encapsulation 📐 

feat(ios): adds option for Simulator-compatible testing artifact

Fixes #5574.

When a user presses Win+M, Win+D, or clicks the desktop button on the
taskbar, all windows get minimized, even those that do not have the
WS_MINIMIZE flag. Delphi modal dialog forms are not expecting this, and
do not restore correctly later.

This scenario arises only when a form is created with a `nil` owner and
then `form.ShowModal` is called.

The fix was already implemented on Splash and HTML forms, but
differently; I have chosen to use the implementation from the Splash
form as it is simpler and seems to work correctly.

Fixes #5584.

Before trying to install we now check if it's a valid zip file.
This fixes #5575.

feat(web): setup build artifacts for manual tests

This is work arising from the spacebarText postmortem. The only changes
in this commit at present are in the readme, just to give us a pull
request to play with.

chore(common/core): Add uninstall option to build script

docs(linux): Fix readme for ibus-keyman

Co-authored-by: Marc Durdin <marc@durdin.net>

auto: increment master version to 15.0.96

chore(common/core): Linux side of caps-lock stores 🚧

Turns out setting `KEYMAN_PROC_CFLAGS` isn't sufficient to use header
files from source repo.

This change improves capslock handling with a capsAlwaysOff keyboard.
Previously, the caps lock indicator was turned on while holding down
the Caps Lock key. With this change we turn it off immediately. This
is done by forcing caps lock off even if the state already seems to
match.

Also, for capsAlwaysOff keyboards skip further processing of caps
lock key after we turned capslock off again.

chore(linux): Consolidate Debian source packages 📦

This change adds a virtual package `keyman-engine` which ibus-keyman
provides. keyman-config can then depend on this virtual package.
This allows to use fcitx instead of ibus if the fcitx-keyman package
provides that virtual package as well.

The previous commit created a consolidated toplevel `debian`
directory.