Add .gitattributes, .editorconfig and extensions.json

.editorconfig

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+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = space
+insert_final_newline = true
+
+[*.{cs}]
+indent_size = 4
+trim_trailing_whitespace = true
+
+[*.{json}]
+indent_size = 2
+trim_trailing_whitespace = true
+
+[*.{ps1,psm1,psd1}]
+indent_size = 4
+trim_trailing_whitespace = true
+
+[*.{ps1xml,props,xml,yaml}]
+indent_size = 2

.gitattributes

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+CHANGELOG.md merge=union
+* text=auto
+*.png binary

.vscode/extensions.json

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+{
+ // See http://go.microsoft.com/fwlink/?LinkId=827846
+ // for the documentation about the extensions.json format
+ "recommendations": [
+ "ms-vscode.csharp",
+ "ms-vscode.PowerShell",
+ "EditorConfig.EditorConfig",
+ "DavidAnson.vscode-markdownlint"
+ ]
+}