Add Ghidra function import script (#909)

* Add draft for Ghidra function import script

* feature: Basic PDB analysis [skip ci]

This is a draft with a lot of open questions left. Please do not merge

* Refactor: Introduce submodules and reload remedy

* refactor types and make them Python 3.9 compatible

* run black

* WIP: save progress

* fix types and small type safety violations

* fix another Python 3.9 syntax incompatibility

* Implement struct imports [skip ci]

- This code is still in dire need of refactoring and tests
- There are only single-digit issues left, and 2600 functions can be imported
- The biggest remaining error is mismatched stacks

* Refactor, implement enums, fix lots of bugs

* fix Python 3.9 issue

* refactor: address review comments

Not sure why VS Code suddenly decides to remove some empty spaces, but they don't make sense anyway

* add unit tests for new type parsers, fix linter issue

* refactor: db access from pdb_extraction.py

* Fix stack layout offset error

* fix: Undo incorrect reference change

* Fix CI issue

* Improve READMEs (fix typos, add information)

---------

Co-authored-by: jonschz <jonschz@users.noreply.github.com>

tools/README.md

@@ -174,7 +174,7 @@ pip install -r tools/requirements.txt
 
 ## Testing
 
-`isledecomp` comes with a suite of tests. Install `pylint` and run it, passing in the directory:
+`isledecomp` comes with a suite of tests. Install `pytest` and run it, passing in the directory:
 
 ```
 pip install pytest
@@ -189,7 +189,7 @@ In order to keep the code clean and consistent, we use `pylint` and `black`:
 
 ### Run pylint (ignores build and virtualenv)
 
-`pylint tools/ --ignore=build,bin,lib`
+`pylint tools/ --ignore=build,ncc`
 
 ### Check code formatting without rewriting files