feat: Zen Browser installation (#940)

* Zen Browser installation

- Added Zen Browser to Web Browsers tab.

* Update core/tabs/applications-setup/browsers/zen-browser.sh

Co-authored-by: Jeevitha Kannan K S <ksjeevithakannan123@gmail.com>

* Revert changes to docs/userguide.md

---------

Co-authored-by: Jeevitha Kannan K S <ksjeevithakannan123@gmail.com>

core/tabs/applications-setup/browsers/zen-browser.sh

@@ -0,0 +1,29 @@
+#!/bin/sh -e
+
+. ../../common-script.sh
+
+installZenBrowser() {
+    if ! command_exists io.github.zen_browser.zen && ! command_exists zen-browser; then
+        printf "%b\n" "${YELLOW}Installing Zen Browser...${RC}"
+        case "$PACKAGER" in
+        pacman)
+            if grep -q avx2 /proc/cpuinfo; then
+                "$AUR_HELPER" -S --needed --noconfirm zen-browser-avx2-bin
+            else
+                "$AUR_HELPER" -S --needed --noconfirm zen-browser-bin
+            fi
+            ;;
+        *)
+            checkFlatpak
+            flatpak install -y flathub io.github.zen_browser.zen
+            ;;
+        esac
+    else
+        printf "%b\n" "${GREEN}Zen Browser is already installed.${RC}"
+    fi
+}
+
+checkEnv
+checkEscalationTool
+checkAURHelper
+installZenBrowser

core/tabs/applications-setup/tab_data.toml

@@ -192,6 +192,12 @@ description = "Mozilla Firefox is a free and open-source web browser developed b
 script = "browsers/firefox.sh"
 task_list = "I"
 
+[[data.entries]]
+name = "Zen Browser"
+description = "Zen Browser is a privacy-focused web browser designed for enhanced security and a seamless browsing experience."
+script = "browsers/zen-browser.sh"
+task_list = "I"
+
 [[data.entries]]
 name = "Thorium"
 description = "Thorium is a Chromium-based browser focused on privacy and performance."