feat: add Filezilla

doc/filezilla.md

@@ -0,0 +1,18 @@
+# Setup Filezilla
+
+* update apt repository cache
+```
+sudo apt update
+```
+
+## Using APT
+
+* install Filezilla
+```
+sudo apt-get install filezilla --no-install-recommends
+```
+
+* verify Filezilla version
+```
+filezilla --version
+```