Reformat and update to .editorconfig + Remove Name

[SayuShira]

Started by removing the property Name from plugin.cs that is now read from the manifest. (Discord message about this and that it should get a PR.)

Addresses #25.

• Updated the .editorconfig with changes from goatcorp/Dalamud
• Further rearranged and grouped properties to find and understand the config more easily
• Removed now unused naming_rules (dotnet_naming_style.on_upper_camel_case_style.xxx)
• Removed properties that had no effect due to being already defined (e.g. indent_size = 4 is defined for all files and doesn't need to be defined again for .c, .cs, .json,..)
• Reformatted applicable files using the updated .editorconfig
  • .cs, .json, .targets, .csproj
  • didn't for now for packages.lock.json as it rebuilds with indent_size = 2

As of 80f0dd426b0e56751c2858a52af9ce872b98bd8c shouldn't include any functional difference other than some resharper_xxx being commented out due to not finding them (see below).

Would need help or an opinion on:

• Removing [RequiredVersion("1.0")] in Plugin.cs
  • I read it is not necessary anymore and not planned to be reused in the future (got API levels now)
• private instance fields are PascalCase but should be camelCase going by .editorconfig
  • e.g. private Configuration Configuration; vs. private Configuration configuration
  • Options I see:
    • Reformat to follow .editorconfig
    • Change private instance fields to PascalCase
    • Remove the style rule from .editorconfig if it is a preference
    • Change the style rule from a warning to a suggestion (which doesn't actually show at least in Rider)
• Commented out all properties of .editorconfig that I couldn't find any documentation of (only some resharper_xxx are affected)
  • Stupid question: Do they exist and do something?
  • Keep them to make sure? Remove them for good?