Add swedish book (#11364)

* Added Pro Git book swedish translation

* added in progress status for swedish translation

---------

Co-authored-by: Roman Lazunin <roman.lazunin@xylem.com>

books/free-programming-books-sv.md

@@ -18,6 +18,11 @@
 * [Programmera spel i C++ för nybörjare](https://sv.wikibooks.org/wiki/Programmera_spel_i_C%2B%2B_f%C3%B6r_nyb%C3%B6rjare) - Wikibooks
 
 
+### Git
+
+* [Pro Git](https://git-scm.com/book/sv/v2) - (HTML) *(:construction: in process)*
+
+
 ### Fortran
 
 * [Lärobok i Fortran 95](http://www.boein.se/f95.pdf) - Linköpings Universitet, Bo Einarsson (PDF)