Add PM - package manager for Simple Linux

PM - package manager for Simple Linux.-.md

@@ -0,0 +1,47 @@
+## Filetree
+
+```
+/
+├── etc
+│   └── pm
+│       └── repo
+├── tmp
+├── usr
+│   ├── bin
+│   │   └── pm
+│   └── share
+│       └── pm
+│           ├── packages
+│           ├── query
+│           └── repos
+│               └── localhost
+│                   └── query
+└── var
+    └── cache
+        └── pm
+            └── pkg
+```
+
+## Package structure (pfetch for example)
+
+```
+pfetch.pkg
+├── list
+├── deps
+├── post_install
+└── usr
+    └── bin
+        └── pfetch
+```
+
+## Example list file (pfetch for example)
+
+```
+usr/bin/pfetch
+```
+
+## Example deps file (pfetch for example)
+
+```
+busybox
+```