Enhance dwarf reader to return canonical type names

[JonatanAntoni]

Instead of language specific symbol type from DW_AT_name a canonical type name is decoded from DW_AT_encoding

Contributes to #27
Addresses review feedback in #30

[qltysh]

Coverage Impact

⬆️ Merging this pull request will increase total coverage on main by 0.8%.

Modified Files with Diff Coverage (5)

Rating	File	% Diff	Uncovered Line #s
	src/pyts/elf/dwarf.py	100.0%
	src/pyts/elf/model.py	100.0%
	src/pyts/elf/resolver.py	100.0%
	src/pyts/elf/symbol_table.py	100.0%
	src/pyts/elf/dwarf_members.py	100.0%
	Total	100.0%

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• Diff Coverage: Coverage for added or modified lines of code (excludes deleted files). Learn more.

• Total Coverage: Coverage for the whole repository, calculated as the sum of all File Coverage. Learn more.

• File Coverage: Covered Lines divided by Covered Lines plus Missed Lines. (Excludes non-executable lines including blank lines and comments.)

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[qltysh]

All good ✅

[jreineckearm]

Works as expected with latest changes. Would wait with merging though until spec for data-type is approved.

[jreineckearm]

Closer to spec despite seeing other than the three specified types. Merging to continue with E2E flow testing. Will capture types as separate issue.