[MOV] survey: reorganize a bit code and files

PURPOSE

Purpose is to perform some cleaning in survey models: naming, ordering,
dead code [0]. As new features are about to land in survey, notably live
interactions [1] and new survey building [2] performing a pre cleaning
is necessary [3].

SPECIFICATIONS

Code move main points

  * move fields to have them grouped by main use;
  * move methods to have them grouped by main purpose;
  * reorganize some line breaks to ease reading files;

Globally this code move is done according to our famous guidelines.

No functional changes should occur with this commit. It contains only
code move, not any change at all.

LINKS

[0] Related to Task ID 2144393 (surveys split / cleaning)
[1] Task ID 1972640 (live interactions)
[2] Task ID 2119587 (new frontend for building surveys)
[3] Task ID 2061901 (survey models cleaning and preparation)

PR #40623

0 files changed, 0 insertions, 0 deletions