Fixes for recent changes + typing improvements

[codecov[bot]]

Codecov Report

Patch coverage: 58.82% and project coverage change: -0.01% :warning:

Comparison is base (89a3223) 71.25% compared to head (fa04e14) 71.24%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #67 +/- ## ========================================== - Coverage 71.25% 71.24% -0.01% ========================================== Files 54 54 Lines 2811 2817 +6 ========================================== + Hits 2003 2007 +4 - Misses 808 810 +2 ``` | [Files Changed](https://app.codecov.io/gh/randovania/mercury-engine-data-structures/pull/67?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=randovania) | Coverage Δ | | |---|---|---| | [src/mercury\_engine\_data\_structures/formats/toc.py](https://app.codecov.io/gh/randovania/mercury-engine-data-structures/pull/67?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=randovania#diff-c3JjL21lcmN1cnlfZW5naW5lX2RhdGFfc3RydWN0dXJlcy9mb3JtYXRzL3RvYy5weQ==) | `76.66% <20.00%> (ø)` | | | [...ry\_engine\_data\_structures/formats/base\_resource.py](https://app.codecov.io/gh/randovania/mercury-engine-data-structures/pull/67?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=randovania#diff-c3JjL21lcmN1cnlfZW5naW5lX2RhdGFfc3RydWN0dXJlcy9mb3JtYXRzL2Jhc2VfcmVzb3VyY2UucHk=) | `88.88% <50.00%> (-2.54%)` | :arrow_down: | | [src/mercury\_engine\_data\_structures/formats/ini.py](https://app.codecov.io/gh/randovania/mercury-engine-data-structures/pull/67?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=randovania#diff-c3JjL21lcmN1cnlfZW5naW5lX2RhdGFfc3RydWN0dXJlcy9mb3JtYXRzL2luaS5weQ==) | `48.71% <66.66%> (+3.00%)` | :arrow_up: | | [...rc/mercury\_engine\_data\_structures/formats/bmsad.py](https://app.codecov.io/gh/randovania/mercury-engine-data-structures/pull/67?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=randovania#diff-c3JjL21lcmN1cnlfZW5naW5lX2RhdGFfc3RydWN0dXJlcy9mb3JtYXRzL2Jtc2FkLnB5) | `89.72% <100.00%> (+0.03%)` | :arrow_up: |

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