feature: Support specify the image matching rule file to move the container images too

[yidaqiang]

feature: Support specify the locally image matching rule file to move the container images too.

when I setting the relocateContainerImages: true property in the config file i.e

# leverage .relok8s-images.yaml file inside the Charts to move the container images too
relocateContainerImages: true
source:
   ...
target:
   ...

In order for this option to work it is required that the source Helm Charts includes a .relok8s-images.yaml file with information about where to find the images inside chart.
In fact, We have a lot of chart left over from history, Which Can't modify. To be able to synchronize these charts, I add the imageHintsFile: "example/image-hints.yaml" property in the config file i.e

# leverage locally image-hints.yaml file to move the container images too
relocateContainerImages: true
source:
  repo:
    imageHintsFile: "example/image-hints.yaml"
   ...
target:
   ...

Now we can synchronize chart contains container images without .relok8s-images.yaml file