import editorconfig from nixpkgs

some sections that were not applicable were left out

.editorconfig

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+# EditorConfig configuration for nixpkgs
+# https://EditorConfig.org
+
+# Top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file, utf-8 charset
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+charset = utf-8
+
+# Ignore diffs/patches
+[*.{diff,patch}]
+end_of_line = unset
+insert_final_newline = unset
+trim_trailing_whitespace = unset
+
+# see https://nixos.org/nixpkgs/manual/#chap-conventions
+
+# Match json/lockfiles/markdown/nix/perl/python/ruby/shell/docbook files, set indent to spaces
+[*.{json,lock,md,nix,pl,pm,py,rb,sh,xml}]
+indent_style = space
+
+# Match docbook files, set indent width of one
+[*.xml]
+indent_size = 1
+
+# Match json/lockfiles/markdown/nix/ruby files, set indent width of two
+[*.{json,lock,md,nix,rb}]
+indent_size = 2
+
+# Match perl/python/shell scripts, set indent width of four
+[*.{pl,pm,py,sh}]
+indent_size = 4
+
+# Match gemfiles, set indent to spaces with width of two
+[Gemfile]
+indent_size = 2
+indent_style = space
+
+# Disable file types or individual files
+# some of these files may be auto-generated and/or require significant changes
+
+[*.{c,h}]
+insert_final_newline = unset
+trim_trailing_whitespace = unset