Update editorconfig for c++ (#3586)

* Make it easier to contribute: Add c++ configuration for .editorconfig.

Using the observed style with 2 indentation spaces.

Signed-off-by: Henner Zeller <[email protected]>

* Add hzeller to contributors.txt

Signed-off-by: Henner Zeller <[email protected]>

Author: hzeller

.editorconfig

@@ -8,4 +8,11 @@ charset = utf-8
 insert_final_newline = true
 trim_trailing_whitespace = true
 indent_style = tab
-ij_java_else_on_new_line = true
+ij_java_else_on_new_line = true
+
+[*.{h,cpp}]
+charset = utf-8
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2

contributors.txt

@@ -327,3 +327,4 @@ YYYY/MM/DD, github id, Full name, email
 2021/12/25, Tinker1024, Tinker1024, [email protected]
 2021/12/31, Biswa96, Biswapriyo Nath, [email protected]
 2022/03/07, chenquan, chenquan, [email protected]
+2022/03/15, hzeller, Henner Zeller, [email protected]