Enforce LF Line Endings (#37843)

Since it's possible that people may be cloning the repository in
Windows, we need to enforce consistent line endings.

.gitattributes

@@ -0,0 +1,15 @@
+*       text=auto
+
+# Force LF In Configuration Files
+*.md    text    eol=lf
+*.json  text    eol=lf
+*.yml   text    eol=lf
+
+# Force LF In Code Files
+*.php   text    eol=lf
+*.js    text    eol=lf
+*.jsx   text    eol=lf
+*.ts    text    eol=lf
+*.tsx   text    eol=lf
+*.css   text    eol=lf
+*.scss  text    eol=lf

plugins/woocommerce/.gitattributes

@@ -1,20 +1,18 @@
-# Set the default behavior, in case people don't have `core.autocrlf` set.
-* text=auto
-
-# Declare files that will always have LF line endings on checkout.
-*.php text eol=lf
-
 # Remove files for archives generated using `git archive`.
-/.*                export-ignore
-bin                export-ignore
-CODE_OF_CONDUCT.md export-ignore
-changelog.txt      export-ignore
-composer.*         export-ignore
-Gruntfile.js       export-ignore
-package.json       export-ignore
-package-lock.json  export-ignore
-phpcs.xml          export-ignore
-phpunit.*          export-ignore
-README.md          export-ignore
-renovate.json      export-ignore
-tests              export-ignore
+/.*                     export-ignore
+/README.md              export-ignore
+/CODE_OF_CONDUCT.md     export-ignore
+/NEXT_CHANGELOG.md      export-ignore
+/changelog.txt          export-ignore
+/changelog              export-ignore
+/bin                    export-ignore
+/composer.json          export-ignore
+/composer.lock          export-ignore
+/package.json           export-ignore
+/package-lock.json      export-ignore
+/client/legacy          export-ignore
+/tsconfig.json          export-ignore
+/tsconfig.base.json     export-ignore
+/phpunit.xml            export-ignore
+/phpunit.xml            export-ignore
+/tests                  export-ignore

plugins/woocommerce/changelog/fix-line-endings

@@ -0,0 +1,5 @@
+Significance: patch
+Type: dev
+Comment: Standardizes line endings using .gitattributes
+
+

plugins/woocommerce/tests/legacy/unit-tests/importer/sample_update_product.csv

@@ -1,4 +1,4 @@
-Name,SKU,Regular price
-WordPress Pennant,wp-pennant,20
-0,,something invalid
+Name,SKU,Regular price
+WordPress Pennant,wp-pennant,20
+0,,something invalid
 0,,something invalid