Add a new .editorconfig and reformat code (#76)

*I'll start working on features and bugfixes after this PR, I promise*
very short summary:
- no more braceless statements
- braces are on new lines now
- `sealed` on everything that can be `sealed`
- no more awkwardly looking alignment of fields/parameters
- no more `Service` suffix on service fields. yeah.
- no more `else`s. who needs them?
- code style is now enforced by CI

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Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

src/Data/Options/IOption.cs

@@ -3,8 +3,9 @@ using Remora.Results;
 
 namespace Boyfriend.Data.Options;
 
-public interface IOption {
+public interface IOption
+{
     string Name { get; }
     string Display(JsonNode settings);
-    Result Set(JsonNode     settings, string from);
+    Result Set(JsonNode settings, string from);
 }