Base: Add more manpages for command-line utilities

Base/usr/share/man/man1/mv.md

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+## Name
+
+mv - move (rename) files
+
+## Synopsis
+
+```**sh
+$ mv [options...] <old name> <new name>
+$ mv [options...] <source...> <destination>
+```
+
+## Description
+
+`mv` renames file `old name` to `new name` or moves all `source` files into `destination`.
+
+## Options
+
+* `-f`, `--force`: Do not prompt before overwriting (not implemented for now)
+* `-v`, `--verbose`: Display all moved files
+
+## Examples
+
+```sh
+$ mv bin /usr
+$ mv *.cpp /usr/src
+$ mv old.txt new.txt
+```