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/ChangeLog.d/8482.txt

@@ -0,0 +1,6 @@
+Changes
+    * PSA_WANT_ALG_CCM and PSA_WANT_ALG_CCM_STAR_NO_TAG are no more synonyms and
+      they are now treated separately. This means that they should be
+      individually enabled in order to enable respective support; also the
+      corresponding MBEDTLS_PSA_ACCEL symbol should be defined in case
+      acceleration is required.