Capitalise initial letter in template filenames for consistency/sorting

Stella.gitignore

@@ -0,0 +1,12 @@
+# Atari 2600 (Stella) support for multiple assemblers
+# - DASM
+# - CC65
+
+# Assembled binaries and object directories
+obj/
+a.out
+*.bin
+*.a26
+
+# Add in special Atari 7800-based binaries for good measure
+*.a78