rename subfolders, add more READMEs

Cargo.toml

@@ -1,7 +1,7 @@
 [workspace]
 
 members = [
-    "fsrc-core",
+    "satrs-core",
     "spacepackets",
-    "fsrc-example"
+    "satrs-example"
 ]

README.md

@@ -1,5 +1,14 @@
-Rust Flight Software Framework Launchpad
+sat-rs launchpad
 =========
 
 This is the prototyping repository for the initial version of a
 Rust Flight Software Framework.
+
+Currently, it contains the following major subcrates:
+
+1. The [`spacepackets`](https://egit.irs.uni-stuttgart.de/rust/spacepackets) crate which contains
+   basic ECSS and CCSDS packet protocol implementations.
+2. The [`fsrc-core`](https://egit.irs.uni-stuttgart.de/rust/fsrc-launchpad/src/branch/main/fsrc-core)
+   crate containing the core components of sat-rs
+3. The [`fscr-example`](https://egit.irs.uni-stuttgart.de/rust/fsrc-launchpad/src/branch/main/fsrc-example)
+   crate which shows a simple example on-board software using various sat-rs components.