Add new settings to set command of cpm CLI

Closes #3

See merge request clean-and-itasks/clean-ide!17

Abc interpreter improvements

See merge request clean-and-itasks/clean-ide!16

Create separate stages for optimising ABC and generating bytecode, so that the timestamps of these files differ for large projects

Resolve "cpm environment options"

Closes #2

See merge request clean-and-itasks/clean-ide!15

Merge branch 'master' of gitlab.science.ru.nl:clean-and-itasks/clean-ide into 2-wip-cpm-environment-options

Search hierarchically for imported object files

See merge request clean-and-itasks/clean-ide!14

Previously an imported object file:
```
implementation module test.test

import code from "obj.o"
```

Would only search in the roots of the project paths. Now it will als
search in the test/ folder in the root.

Add option KeepByteCodeSymbols to keep the symbol table when stripping bytecode

See merge request clean-and-itasks/clean-ide!12

Only generate new optimised ABC and bytecode when the source file is newer

See merge request clean-and-itasks/clean-ide!11

Add EnvironmentByteCodePrelink and PrelinkByteCode options to prelink bytecode for use with the WebAssembly interpreter

in project files for modules in a directory write the directory once, instead of per module (to reduce problems caused by version control systems)

Move project options related to bytecode generation to new separate pane

See merge request clean-and-itasks/clean-ide!10

Add support for bytecode generation to cpm and IDE

See merge request clean-and-itasks/clean-ide!9