Add API support for collecting gzip info

[nicholas-codecov]

We're going to add support for collecting gzip information inside the bundler plugins, which will provide us with more accurate numbers for gzip size. So we need to add support either in the current schema or create a new schema version so that we can actually utilize this info once uploaded.

Note

We will only be collecting gzip information for Assets, and not modules

We'll also need to update the resolvers to grab this new value, or fallback to the previous way of calculating the gzip size

Bundle stats file schema: "version": "2" and anywhere there is "size" there will be a "gzipSize"

During ingestion, if version 2 will save gzipSize with the specified value.
Note need to add a gzipSize column to asset and module tables.

• blocked by [Shared] Make migration mechanism after introducing UUID to Asset #1825 (need to start introducing DB migrations to make sure things to break for older version commit reports since the DB schema is changing too much)

During the SQLite migration, when adding gzipSize column default to the GZIP = 0.001 compression ratio we currently display.

In API just retrieve the gzipSize column

Tasks

Beta Give feedback

1. [Shared] Make migration mechanism after introducing UUID to Asset #1825
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2. [Shared] Make mechanism to process different versions of bundle stats files #1926
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3. [Shared] Make new gzipSize columns / store the values from the stats file / add function to retrieve size #1927
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4. [API] Call the shared gzipSize function and return it #1928
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