### Problem description
Attempting to do an MD5 hash of a large region (e.g. 2 MiB, ``u8
data[0x200000]``) crashes with a segfault.
### Implementation description
In ``hex::plugin::hashes::hashProviderRegionWithHashLib()``,
``hashFunction->TransformBytes()`` is called with an offset of 0,
because it iterates over ``data`` and not the entire region.
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### Problem description
Because of `s_drawTexture` never being set to true, textures rarely or
never drew in the 3D visualizer.
### Implementation description
Set `s_drawTexture` to true when correct (valid texture file/object).
### Problem description
The fonts list on Linux does not show all system fonts, and does not
show font names at all.
### Implementation description
Use Fontconfig to make the list less bad if Fontconfig headers are
available.
### Additional things
I like fonts.
---------
Co-authored-by: Nik <werwolv98@gmail.com>
### Problem description
ImHex asks users whether they wish to opt-in to network connections on
start (excellent!), then ignores that and tries to connect to the
network anyway when the welcome screen loads (less excellent!).
### Implementation description
Also don’t connect to the network on the welcome screen if it is
supposed to not do that.
### Problem description
WerWolv/ImHex#1814
### Implementation description
1. Remove the flag that wrongly tells `ImFontAtlas` that it owns font
data, and remove that parameter from the function signature entirely
since now it is always `false`.
2. Rename `takeAtlas` to `getAtlas` since it no longer transfers
ownership as of b652565b57.
