MEI Export: identify repeated sections and put them inside of <section> </section>

Your idea

Currently in exported MEI files, repeated sections are not inside of <section>s. For example, the MEI file exported from this score (containing two repeats, at Measures 28 and 73) only has the one <section> from the start to the end. It would be good to place repeated measures inside of individual<section>s with xml ids, so that (e.g.,) the exported MEI of the above score would have the structure below:

           <section xml:id="section_allegro">
              <section xml:id="section_A_m1-28">
              ...
              </section>
              <section xml:id="section_B_m29-73">
              ...
              </section>
           </section>

pinging @lpugin

Problem to be solved

After such <section>s are included, it'd be easy to add <expansion> for scores with repeats, which can be used to create expansionmap etc. For example, it would then be easy for anyone to add <expansion> to specify the sequence of sections in actual music performance:

           <section xml:id="section_allegro">
              <expansion plist="#section_A_m1-28 #section_A_m1-28 #section_B_m29-73 #section_B_m29-73" xml:id="expansion-maximum"/> 
              <section xml:id="section_A_m1-28">
              ...
              </section>
              <section xml:id="section_B_m29-73">
              ...
              </section>
           </section>

Prior art

No response

Additional context

No response