Support for PC platform (#12)

* improvements for cross-platform compiling

* moved tactility-core to libs/

* splitup improvements

* remove git/gitmodules from freertos

* better platformbetter platform checks

* added build scripts

* delete mbedtls

* re-add mbedtls

* fixes and improvements

* added pc build

* simplify build scripts

* revert build scrpit

* updated builds

* fix for pc

* fix for pc

* fix for build

libs/mbedtls/tests/data_files/ec_prv.sec1.pw.pem

@@ -0,0 +1,8 @@
+-----BEGIN EC PRIVATE KEY-----
+Proc-Type: 4,ENCRYPTED
+DEK-Info: DES-CBC,AA94892A169FA426
+
+gSkFuUENNke5MvkWHc11/w1NQWBxaIxGT+d5oRcqs44D3tltVOwtdnYexoD9uSIL
+wMFFRLL6I5ii1Naa38nPOMaa7kLU2J3jY8SeIH1rQ43X6tlpv9WFGqDn/m6X7oKo
+RMMfGdicPZg=
+-----END EC PRIVATE KEY-----