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/configs/tls13-only.h

@@ -0,0 +1,31 @@
+/* MBEDTLS_USER_CONFIG_FILE for testing.
+ * Only used for a few test configurations.
+ *
+ * Typical usage (note multiple levels of quoting):
+ *     make CFLAGS="'-DMBEDTLS_USER_CONFIG_FILE=\"../tests/configs/tls13-only.h\"'"
+ */
+
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+/* Enable TLS 1.3 and core 1.3 features */
+#define MBEDTLS_SSL_PROTO_TLS1_3
+#define MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE
+
+/* Disable TLS 1.2 and 1.2-specific features */
+#undef MBEDTLS_SSL_ENCRYPT_THEN_MAC
+#undef MBEDTLS_SSL_EXTENDED_MASTER_SECRET
+#undef MBEDTLS_SSL_RENEGOTIATION
+#undef MBEDTLS_SSL_PROTO_TLS1_2
+#undef MBEDTLS_SSL_PROTO_DTLS
+#undef MBEDTLS_SSL_DTLS_ANTI_REPLAY
+#undef MBEDTLS_SSL_DTLS_HELLO_VERIFY
+#undef MBEDTLS_SSL_DTLS_SRTP
+#undef MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE
+#undef MBEDTLS_SSL_DTLS_CONNECTION_ID
+#undef MBEDTLS_SSL_DTLS_CONNECTION_ID_COMPAT
+
+/* Enable some invasive tests */
+#define MBEDTLS_TEST_HOOKS