Enforce LF line endings with .gitattributes (#64)

Two files in #60 were committed with CRLF although .editorconfig asks for LF.
Git now normalizes every text file to LF on commit and checks it out as LF on
every platform, so the editor setting can no longer be bypassed. gradlew.bat
keeps CRLF in the working tree. jar and png files are marked binary.

Also fix the linguist-generated pattern: the jOOQ sources live under
generated/src/, not src/generated/, so the old pattern matched nothing.

Author: ThoSap

.editorconfig

@@ -20,5 +20,8 @@ indent_size = 2
 [Makefile*]
 indent_style = tab
 
+[*.bat]
+end_of_line = crlf
+
 [src/main/resources/default_banner.txt]
 insert_final_newline = false

.gitattributes

@@ -1 +1,13 @@
-src/generated/** linguist-generated
+# Line endings: store LF in the repository and check out LF on every platform.
+# Git detects binary files itself through text=auto. The entries below are the exceptions.
+* text=auto eol=lf
+
+# Windows batch files need CRLF in the working tree.
+*.bat text eol=crlf
+
+# Binary files
+*.jar binary
+*.png binary
+
+# GitHub: mark the jOOQ generated sources as generated (collapsed in diffs, excluded from language statistics).
+generated/src/** linguist-generated