ci: add migrating envs script for v0.2.8

[huyngopt1994]

For the coming release, we have a big change related to environment names, and then need to create a script for migrating old config.

Start Migrating Process
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Backup env and docker-compose files
Finished backup for 2 files
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Start replacing Ronin and Etherum Endpoint configs
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Start replacing DATABASE config
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Start replacing Ronin Task Process config
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Start replacing Etherum Task Process config
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Start replacing Bridge Stats config
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Happy for new version v0.2.8, please double check with the final doc, and start bridge