Test chained autocoder

Note: auto-generated from comments in: ./test/data/cmake/autocoder/test_chained_autocoder.cmake

autocoder/test_chained_autocoder.cmake:

Tests that a chained autocoder runs as expected - takes output from test_target_autocoder and creates chained files from them.

Function test_chained_autocoder_is_supported:

Support all files with the ".test-target.generated.txt" suffix (output from test_target_autocoder)

Function test_chained_autocoder_setup_autocode:

Sets up the steps to run the chained autocoder and produce chained files during the build. Takes .test-target.generated.txt files and creates .chained.txt files from them.

AC_INPUT_FILES: list of supported autocoder input files (.test-target.generated.txt files)