tools: add data init and auto-reporting to tools and pve section

Introduce telemetry helpers in misc/api.func: _telemetry_report_exit (reports success/failure via post_tool_to_api/post_addon_to_api) and init_tool_telemetry (reads DIAGNOSTICS, starts install timer and installs an EXIT trap to auto-report). Integrate telemetry into many tools/addon and tools/pve scripts by sourcing the remote api.func and calling init_tool_telemetry (guarded with declare -f). Also apply a minor arithmetic formatting tweak in misc/build.func for RECOVERY_ATTEMPT.

tools/addon/webmin.sh

@@ -36,6 +36,10 @@ msg_ok() {
   echo -e "${BFR} ${CM} ${GN}${msg}${CL}"
 }
 
+# Telemetry
+source <(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/api.func) 2>/dev/null || true
+declare -f init_tool_telemetry &>/dev/null && init_tool_telemetry "webmin" "addon"
+
 header_info
 
 whiptail --backtitle "Proxmox VE Helper Scripts" --title "Webmin Installer" --yesno "This Will Install Webmin on this LXC Container. Proceed?" 10 58