Add process_info/1 and process_info/2 with list argument Implement erlang:process_info/1 and the list-of-keys form of erlang:process_info/2, matching Erlang/OTP behaviour. Both are needed by Popcorn. This revamps the original effort by Mateusz Furga (Software Mansion) in #2219. Main differences from that approach: - process_info/1 is implemented in Erlang (estdlib) rather than C, simplifying the native code and making the default key set easier to maintain. - Pid and argument validation match OTP: badarg for external pids, and badarg for an invalid argument even when the target process is dead. - Fixes for pre-existing defects that process_info now exposes: message_queue_len no longer counts queued signals, a request racing process teardown answers undefined, and a caught trap exception no longer leaves the process wedged. - Allocation failures raise out_of_memory instead of trapping forever, and the result heap size is bounded. Closes: #2190, #2191 See also: #2219 These changes are made under both the "Apache 2.0" and the "GNU Lesser General Public License 2.1 or later" license terms (dual license). SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later

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Implement erlang:process_info/1 #2190

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Implement `erlang:process_info/1` #2190