Resolve "database upgrade, new table for length and weight"

Closes #13 (closed)

added database label

added 2 commits

• 2d5d36c4 - adding database model for tracking the salamanders growth
• 60331f74 - new database file that contains the salamander_growth table, currently not data inside the datat

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marked this merge request as ready

mentioned in commit 8bdc5d65

merged