add kitty install script

.config/yadm/bootstrap.d/install-kitty

@@ -0,0 +1,40 @@
+#!/bin/bash
+
+KITTY_VERSION="0.25.2"
+KITTY_INSTALL_DIR="${HOME}/apps/kitty"
+KITTY_CURRENT_VERSION=""
+
+if [[ -x "$(command -v kitty)" ]] ; then
+  KITTY_CURRENT_VERSION="$(kitty --version | grep -o '[0-9.]\+')"
+fi
+
+if [[ "$KITTY_VERSION" != "$KITTY_CURRENT_VERSION" ]] ; then
+  echo "Installing kitty version ${KITTY_VERSION}..."
+  
+  URL="https://github.com/kovidgoyal/kitty/releases/download/v${KITTY_VERSION}/kitty-${KITTY_VERSION}-x86_64.txz"
+  TARGET="$(mktemp -t kitty-XXXXXX.txz)"
+  
+  echo "Downloading from ${URL}..."
+  curl --location --output "${TARGET}" -# "${URL}"
+  
+  if [[ -d "${KITTY_INSTALL_DIR}" ]] ; then
+    echo "Removing old kitty installation..."
+    rm -rf "${KITTY_INSTALL_DIR}"
+  fi
+  
+  echo "Unpacking file ${TARGET}..."
+  mkdir -p "${KITTY_INSTALL_DIR}"
+  tar --directory="${KITTY_INSTALL_DIR}" -xf "${TARGET}"
+  
+  echo "Creating link to kitty executable..."
+  mkdir -p "${HOME}/.local/bin"
+  ln -s --force "${KITTY_INSTALL_DIR}/bin/kitty" "${HOME}/.local/bin/"
+  
+  echo "Copy kitty.desktop file..."
+  mkdir -p "${HOME}/.local/share/applications"
+  cp "${KITTY_INSTALL_DIR}/share/applications/kitty.desktop" "${HOME}/.local/share/applications/"
+  sed -i "s|Icon=kitty|Icon=${KITTY_INSTALL_DIR}/share/icons/hicolor/256x256/apps/kitty.png|g" "${HOME}/.local/share/applications/kitty.desktop"
+  sed -i "s|Exec=kitty|Exec=${KITTY_INSTALL_DIR}/bin/kitty|g" "${HOME}/.local/share/applications/kitty.desktop"
+else
+  echo "Kitty version ${KITTY_VERSION} already installed."
+fi