chore: add .editorconfig and .gitattributes

.editorconfig

@@ -0,0 +1,17 @@
+[*]
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace =  true
+
+[*.sh]
+# like -i=2
+indent_style = space
+indent_size = 2
+
+#shell_variant      = posix # like -ln=posix
+#binary_next_line   = true  # like -bn
+switch_case_indent = true  # like -ci
+space_redirects    = true  # like -sr
+#keep_padding       = true  # like -kp

.gitattributes

@@ -0,0 +1,47 @@
+# Set the default behavior, in case people don't have core.autocrlf set.
+* text=auto
+
+# Explicitly declare text files you want to always be normalized and converted
+# to native line endings on checkout.
+.astyleignore text eol=lf
+.astylerc text eol=lf
+.codespellignore text eol=lf
+.codespellrc text eol=lf
+.editorconfig text eol=lf
+.flake8 text eol=lf
+.gitattributes text eol=lf
+.gitignore text eol=lf
+
+*.adoc text eol=lf
+*.c text eol=lf
+*.cfg text eol=lf
+*.cmake text eol=lf
+*.cpp text eol=lf
+*.css text eol=lf
+*.dtsi text eol=lf
+*.gv text eol=lf
+*.h text eol=lf
+*.html text eol=lf
+*.in text eol=lf
+*.ino text eol=lf
+*.json text eol=lf
+*.ld text eol=lf
+*.md text eol=lf
+*.MD text eol=lf
+*.old text eol=lf
+*.patch text eol=lf
+*.pde text eol=lf
+*.properties text eol=lf
+*.py text eol=lf
+*.s text eol=lf
+*.S text eol=lf
+*.sh text eol=lf
+*.spec text eol=lf
+*.txt text eol=lf
+*.yml text eol=lf
+
+# Denote all files that are truly binary and should not be modified.
+*.jpg binary
+*.pdf binary
+*.png binary
+