[Desktop] Persist troubleshooting terminal when hidden (#2398)

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src/hooks/bottomPanelTabs/useTerminalBuffer.ts

@@ -0,0 +1,30 @@
+import { SerializeAddon } from '@xterm/addon-serialize'
+import { Terminal } from '@xterm/xterm'
+import { markRaw, onMounted, onUnmounted } from 'vue'
+
+export function useTerminalBuffer() {
+  const serializeAddon = new SerializeAddon()
+  const terminal = markRaw(new Terminal({ convertEol: true }))
+
+  const copyTo = (destinationTerminal: Terminal) => {
+    destinationTerminal.write(serializeAddon.serialize())
+  }
+
+  const write = (message: string) => terminal.write(message)
+
+  const serialize = () => serializeAddon.serialize()
+
+  onMounted(() => {
+    terminal.loadAddon(serializeAddon)
+  })
+
+  onUnmounted(() => {
+    terminal.dispose()
+  })
+
+  return {
+    copyTo,
+    serialize,
+    write
+  }
+}