Enhancement: bioavailability calculations

[js3110]

Description

Currently PKNCA is unable to calculate parameter F (bioavailability). Until that feature has been implemented, we want a separate section (along with the rest of the ratio calculations) to calculate bioavailability. This should include the following options:

1. Auc_Ex_dn/AUC_IV_dn for individual subjects (if same subject has both samples)
2. AUC_EX.dn(ind) / AUC_IV.dn (Mean) (where different subjects have different routes)
3. AUC_EX.dn(Mean) / AUC_IV.dn(Mean) (as summary statistics)

F should be written as a ratio and as a percentage %

The user should be able to select which AUCs they would like to use: inf, obs, last, int etc.
The app should be able to automatically determine if there are subjects with both IV and EX routes for each group (taken from grouping_vars), or not, and decide which of 1 or 2 it will calculate. The mean should be calculated by the grouping vars. The results should be shown in a table with AUC1.dnEX, AUC.dn.IV, ratio, %. The type of AUC (mean or individual) should also be in the results.

Example table:

Definition of Done

The requirements for the feature to be complete:

• Bioavailability calculation for individuals, and grouped data
• Automatic calculations with only user input for parameters
• Results table with ratios displayed

[js3110]

This issue is linked to #116 , and will also be created in the same tab as #191