Add preset styles to erc-status-sidebar

Add preset styles to erc-status-sidebar

* lisp/erc/erc-networks.el (erc-networks--rename-server-buffer): Store
`erc-networks--id' in process object's plist.
* lisp/erc/erc-status-sidebar.el (erc-status-sidebar): Change group
parent from `convenience' to `erc'.
(erc-status-sidebar-channel-format): Mention in doc string that it
depends on new option `erc-status-sidebar-style'.
(erc-status-sidebar-highlight-active-buffer): New option to control
whether the current window's target is highlighted in the status bar.
(erc-status-sidebar-style): New option to determine whether servers
and queries also appear in the sidebar.
(erc-status-sidebar-click-display-action,
erc-status-sidebar-singular): New options.
(erc-status-sidebar-get-window): Consider
`erc-status-sidebar-singular'.
(erc-status-sidebar-open): Fix toggle functionality that somehow fell
through the cracks after the adoption of the package into ERC proper.
(erc-bufbar-mode, erc-bufbar-enable, erc-bufbar-disable): New module
named `bufbar' instead of `sidebar', which is more easily confusable
with `speedbar'.  The preferred name, `status-sidebar' was unavailable
because its minor-mode would have been `erc-status-sidebar-mode',
which is already taken by the major mode used for status-bar buffers
themselves.
(erc-status-sidebar-toggle): Ignore `erc-status-sidebar-singular'.
(erc-status-sidebar--trimpat, erc-status-sidebar--prechan): Add helper
vars for new sorting function, allowing it to honor the existing
interface, which only expects one argument.
(erc-status-sidebar-prefer-target-as-name): New function for
determining buffer name, preferring targets for target buffers.
(erc-status-sidebar-get-channame): Use internal API to help determine
name of buffer in sidebar.
(erc-status-sidebar-prefer-target-as-name,
erc-status-sidebar--show-disconnected,
erc-status-sidebar-all-target-buffers,
erc-status-sidebar-default-allsort): Add new naming and sorting
functions and associated helper functions and variables.
(erc-status-sidebar--active-marker,
erc-status-sidebar--set-active-line): New variable and function for
highlighting the active target in the status bar.
(erc-status-sidebar-default-insert,
erc-status-sidebar-pad-hierarchy): New functions for visiting various
stages of buffer modification when rendering sidebar.
(erc-status-sidebar-refresh): Consider presets and new options when
rendering sidebar.
(erc-status-sidebar-kill):  Disable `erc-bufbar-mode' when active.
(erc-status-sidebar-click): Appeal to option
`erc-status-sidebar-display-action' for `pop-to-buffer' action.
(erc-status-sidebar-scroll-up, erc-status-sidebar-scroll-down,
erc-status-sidebar-recenter): Add commands to scroll and
recenter sidebar from a target buffer's window.
(erc-status-sidebar-set-window-preserve-size): Ignore
`erc-status-sidebar-singular'.
(erc-status-sidebar-mode): Make non-interactive to avoid confusion
when folks run "M-x erc-status-sidebar-mode" expecting a module
toggle.
* test/lisp/erc/erc-scenarios-status-sidebar.el: New file.
* test/lisp/erc/resources/base/gapless-connect/foonet.eld: Fix wrong
manifest for channel and extend PASS timeout.  (Bug#63595)