Improvement: Update the TimeSlave to comply to SCORE conventions

[lavrovvalera]

The Time component shall fulfill the SCORE folder and naming conventions, located in https://github.com/eclipse-score/score/blob/main/docs/contribute/general/

Violated process rules:

At least, some of the rules are already violated:

• naming.rst — all files/folders must be snake_case; interface classes must not use an Iface suffix
• folder.rst — production code under score//src/; component docs in score//docs/;

So, it is needed to:

• Make the folder and files names copliant with score process
• Make the folder structure copliant with score process