bug: Bodyweight used in calculation for all exercises when enabled

[andreped]

Benchpress should not include body weight in calculation when enabled, but that seems to be the case below.

[andreped]

This is because we attempt to store a boolean type in the database, but that is not supported by sqlite apparently:
https://github.com/tekartik/sqflite/blob/master/sqflite/doc/supported_types.md#supported-types

So we should change this to uint or similar to get this to work.

Also see here:

Connecting to VM Service at ws://127.0.0.1:60674/4HTqUmjFoC8=/ws
flutter: Database is located at: /Users/andreped/Library/Developer/CoreSimulator/Devices/63D442D5-1A5B-4A79-88B5-9BB25EE7A6A3/data/Containers/Data/Application/77676EEC-C266-4184-891B-C19FF89A180F/Documents/exercises.db
flutter: *** WARNING ***

Invalid argument false with type bool.
Only num, String and Uint8List are supported. See https://github.com/tekartik/sqflite/blob/master/sqflite/doc/supported_types.md for details

This will throw an exception in the future. For now it is displayed once per type.
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flutter: Fetching names from Exercise table...