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

---------

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

src/Data/Options/LanguageOption.cs

@@ -6,8 +6,10 @@ using Remora.Results;
 namespace Boyfriend.Data.Options;
 
 /// <inheritdoc />
-public class LanguageOption : Option<CultureInfo> {
-    private static readonly Dictionary<string, CultureInfo> CultureInfoCache = new() {
+public sealed class LanguageOption : Option<CultureInfo>
+{
+    private static readonly Dictionary<string, CultureInfo> CultureInfoCache = new()
+    {
         { "en", new CultureInfo("en-US") },
         { "ru", new CultureInfo("ru-RU") },
         { "mctaylors-ru", new CultureInfo("tt-RU") }
@@ -15,18 +17,21 @@ public class LanguageOption : Option<CultureInfo> {
 
     public LanguageOption(string name, string defaultValue) : base(name, CultureInfoCache[defaultValue]) { }
 
-    public override string Display(JsonNode settings) {
+    public override string Display(JsonNode settings)
+    {
         return Markdown.InlineCode(settings[Name]?.GetValue<string>() ?? "en");
     }
 
     /// <inheritdoc />
-    public override CultureInfo Get(JsonNode settings) {
+    public override CultureInfo Get(JsonNode settings)
+    {
         var property = settings[Name];
         return property != null ? CultureInfoCache[property.GetValue<string>()] : DefaultValue;
     }
 
     /// <inheritdoc />
-    public override Result Set(JsonNode settings, string from) {
+    public override Result Set(JsonNode settings, string from)
+    {
         return CultureInfoCache.ContainsKey(from.ToLowerInvariant())
             ? base.Set(settings, from.ToLowerInvariant())
             : new ArgumentInvalidError(nameof(from), Messages.LanguageNotSupported);