Fix annoying flashing in simple console on Windows ...caused by different key names inder X11 and Windows. This fix adds few more to the list.

Show log output in simple console This needed because, for example, python errors and stacktrace is reported on log stream, not on output stream.

Workaround: assume native target when issuing `run` or `attach` commands using simple console Background command execution is not supported by some targets, most notably by Windows native target. However, at the point we have to decided whether use background execution or not, we don't know which target will get connected and therefore we cannot check target features. So, make a guess and assime we gonna use native target. This is so bad, this *absolutely* has to be fixed somehow.

UX: automatically refresh memory contents when inferior stops ...so memory contents is up-to-date.

Fix rendering of an instruction in instruction list The disassembly string comes from GDB which in some cases (e.g, RISC-V) uses tab to separate mnemonic from operands. This tab must be expanded before the string is handed over to the list view to render otherwise it would show replacement glyph ("cheese").

Oops, fixed bug introduced by previous commit (44f5e1c314b3) We *MUST NOT* check for async support because at the time we issue (say) `r` command, the real target is not yet connected, therefore check for async would return `false` even if in fact async is supported. So, just run all execution commands in background mode unconditionally.

Execute CLI execution commands in background mode ...if target supports async mode. This allows user to interrupt the program execution, at the very least.

A complete rewrite of simple console ..that is not using `TerminalView`. The original (previous) implementation had various problems that were hard to fix, namely loosing some stream output in some cases. New (current) implementation uses custom console view (1VDBSimpleDebuggerConsoleView`) based on `TextCollector` rather than `TerminalView`. The resulting code is much much simpler, it does not use internal pipes nor REPL / pipe reader processes. Whole REPL runs completely in UI process.

Added (some) documentation ...albeit far from being complete, as always.

Skip test `#test_completion_01` when `-complete` MI command is not available.