Refactor from `%` string formatting to f-strings in every module.

[junkmd]

We could replace % string formatting with f-strings wherever applicable, as was done in #654.

For details on f-string syntax, refer to the Python official documentation.

• Most of the changes should follow these patterns:

  • Replace "...%s..." % foo with f"...{foo}..."
  • Replace "...%r..." % foo with f"...{foo!r}..."
  • Replace "...%x..." % foo with f"...{foo:x}..."
  • Replace "...%d..." % foo with f"...{foo:d}..."
  • Replace "...\\%s..." % foo with f"...\\{foo}..."
  • Replace r"...\%s..." % foo with rf"...\{foo}..."

• There’s NO need to modify placeholders in logger method calls, as shown below. https://github.com/enthought/comtypes/blob/083c19e9fdc0f366df48ad448e897246f346ede0/comtypes/init.py#L137-L141

• We welcome keeping changes as small as possible per pull request, as it makes it easier for reviewers to check the changes.

• If your PR addresses multiple rules or files, reviewers might consider it a large change and suggest splitting it into multiple PRs.

TODO list

Under the comtypes/...

• [x] comtypes/_comobject.py
• [x] comtypes/_memberspec.py
• [x] comtypes/_post_coinit/_cominterface_meta_patcher.py
• [x] comtypes/automation.py
• [x] comtypes/client/_code_cache.py
• [x] comtypes/client/_constants.py
• [x] comtypes/client/_events.py
• [x] comtypes/client/_generate.py
• [x] comtypes/client/lazybind.py
• [x] comtypes/errorinfo.py
• [x] comtypes/server/inprocserver.py
• [x] comtypes/server/register.py
• [x] comtypes/server/w_getopt.py
• [x] comtypes/tools/codegenerator/codegenerator.py
• [x] comtypes/tools/codegenerator/helpers.py
• [x] comtypes/tools/codegenerator/packing.py
• [x] comtypes/tools/tlbparser.py
• [x] comtypes/tools/typedesc.py
• [x] comtypes/typeinfo.py
• [x] comtypes/viewobject.py

Under the comtypes/test/...

• [x] comtypes/test/__init__.py
• [x] comtypes/test/test_BSTR.py
• [x] comtypes/test/test_avmc.py
• [x] comtypes/test/test_casesensitivity.py
• [x] comtypes/test/test_collections.py
• [x] comtypes/test/test_comserver.py
• [x] comtypes/test/test_createwrappers.py
• [ ] comtypes/test/test_dispinterface.py
• [ ] comtypes/test/test_excel.py
• [ ] comtypes/test/test_outparam.py
• [ ] comtypes/test/test_safearray.py
• [ ] comtypes/test/test_sapi.py
• [ ] comtypes/test/test_server.py
• [ ] comtypes/test/test_urlhistory.py
• [ ] comtypes/test/test_variant.py
• [ ] comtypes/test/test_word.py