Port cyclonedx presenter to format object (#589)

* add new cyclonedx format object

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* remove cyclonedx presenter

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* remove cyclonedx presenter call

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* remove dependence on golden images for format tests

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* wire up new formt + rename all-presenters ref

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* add CLI test to ensure that all formats can be expressed as report output

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* add cyclonedx version and encoding format to package name

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* optionally preserve format snapshot images

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* fix linting + text unit tests

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

internal/formats/cyclonedx12xml/test-fixtures/image-simple/Dockerfile

@@ -0,0 +1,4 @@
+# Note: changes to this file will result in updating several test values. Consider making a new image fixture instead of editing this one.
+FROM scratch
+ADD file-1.txt /somefile-1.txt
+ADD file-2.txt /somefile-2.txt

internal/formats/cyclonedx12xml/test-fixtures/image-simple/file-1.txt

@@ -0,0 +1 @@
+this file has contents

internal/formats/cyclonedx12xml/test-fixtures/image-simple/file-2.txt

@@ -0,0 +1 @@
+file-2 contents!