[DAPHNE-#525] DaphneDSL map(): UDFs in Other Languages (e.g., Python, C++)

[StoeckOverflow]

This PR introduces a new kernel for invoking map kernels from other programming languages and provides methods for the data transfer between DAPHNE and Python (see Issue #525 ).

Features:

• New kernel for invoking map kernels of other programming languages.
• Four Python map kernels offering different data transfer methods: Binary file, CSV file, Copy, Shared Memory.

Details:

• New Kernels:
  - Kernel for invoking map kernels: src/runtime/local/kernels/MapExternalPL.h
  - Four Python map kernels: src/runtime/local/kernels/MAP_EXTERNAL/..
• Python Interpreter Singleton:
  - Integrated a global PythonInterpreter singleton class to manage Python interactions: src/util/PythonInterpreter
• Tests
  - Basic functionality tests for different map kernels: test/runtime/local/kernels/AlternativeMapTest
• Scripts:
  - General use-case scripts:
  scripts/examples/map/map-GeneralExample.daph
  scripts/examples/map/mapExternalPL-UtilityExample.daph
  - Performance testing scripts: scripts/examples/map/performanceTest/..
• IR Extensions:
  - New operation (MapOpExternal) for Lowering of new Kernel: src/ir/daphneir/DaphneOps.td
• Documentation Updates:
  - New map entry: doc/DaphneDSL/Builtins.md
  - Guidance for extending the map kernel: doc/developement/ImplementBuiltinKernel.md

[pdamme]

Thanks for this contribution @StoeckOverflow! Enabling DaphneDSL map() with UDFs written in other programming languages, such as Python, is a very interesting feature that can be used to do value-based processing beyond what DaphneDSL is currently able to do.

The two of us have already discussed this matter and I will provide some feedback on your code soon.