function bindDropinModFileSystemButton(){
    const fsBtn = document.getElementById('settingsDropinFileSystemButton')
    fsBtn.onclick = () => {
        DropinModUtil.validateDir(CACHE_SETTINGS_MODS_DIR)
        shell.openPath(CACHE_SETTINGS_MODS_DIR)
    }
    fsBtn.ondragenter = e => {
        e.dataTransfer.dropEffect = 'move'
        fsBtn.setAttribute('drag', '')
        e.preventDefault()
    }
    fsBtn.ondragover = e => {
        e.preventDefault()
    }
    fsBtn.ondragleave = e => {
        fsBtn.removeAttribute('drag')
    }

    fsBtn.ondrop = async e => {
        fsBtn.removeAttribute('drag')
        e.preventDefault()

        DropinModUtil.addDropinMods(e.dataTransfer.files, CACHE_SETTINGS_MODS_DIR)
        await reloadDropinMods()
    }
}
Bind functionality to the file system button for the selected
server configuration.