* added new opus fuzzer, build working
* added missing license header, cleaned up Dockerfile
* fixed build process
* changed build process depending on C or C++ fuzzer
* converted opus_multi_fuzzer from C++ to C, reverted build script to only accept C files
* [opus] Build with -D_FORTIFY_SOURCE=0 to avoid msan false positives
Without this, a silk_memcpy call could resolve to __memcpy_chk,
which does not have an msan intercept, leading to false use-of-uninitialized-value errors.
* [opus] Consolidate cflags
* [opus] Fix typo
* [opus] Add Dockerfile and build.sh for decoder
* [opus] http->https and updated auto_ccs in project.yaml
* [opus] Fix copying .options and test corpus zip files
James Zern