chore: Release v0.8.0

Release vAccel v0.8.0 core and components

PR: #214
Signed-off-by: Kostis Papazafeiropoulos <papazof@gmail.com>
Reviewed-by: Anastassios Nanos <ananos@nubificus.co.uk>
Approved-by: Anastassios Nanos <ananos@nubificus.co.uk>

docs(coverage): Update coverage report

PR: #178
Signed-off-by: github-actions[bot] <support@github.com>
Reviewed-by: Anastassios Nanos <ananos@nubificus.co.uk>
Approved-by: Anastassios Nanos <ananos@nubificus.co.uk>

fix(plugin): Introduce proper check for extra fields in version

When we check the version compatibility between the core library and
plugins, we compare the version string against the plugin version
string. We use `strcmp` to do that, and its behavior is undefined
when we pass a `NULL` ptr. This check verifies that the strings passed
to `strcmp` are not `NULL`.

PR: #174
Signed-off-by: Anastassios Nanos <ananos@nubificus.co.uk>
Reviewed-by: Kostis Papazafeiropoulos <papazof@gmail.com>
Approved-by: Kostis Papazafeiropoulos <papazof@gmail.com>

docs: Add initial profiling doc

Give an overview of the profiling infrastructure in vAccel. Pending
the remote functionality.

Signed-off-by: Anastassios Nanos <ananos@nubificus.co.uk>
Reviewed-by: Kostis Papazafeiropoulos <papazof@gmail.com>
Approved-by: Kostis Papazafeiropoulos <papazof@gmail.com>
PR: #116

release: Bump v0.6.0

This is a long awaited release bump. Our next
release will be based on meson.

Signed-off-by: Anastassios Nanos <ananos@nubificus.co.uk>
Reviewed-by: Kostis Papazafeiropoulos <papazof@gmail.com>
Approved-by: Kostis Papazafeiropoulos <papazof@gmail.com>
PR: #115

Fix segmentation fault in exec_generic example

Use the correct argument for vAccel operation and pass the full path of
the library as an argument.

Signed-off-by: Charalampos Mainas <cmainas@nubificus.co.uk>

Merge pull request #45 from cloudkernels/feat_image_profiling

Add initial profiling for image operations

tf: support TF session delete operation

This call is necessary to allow resources used by the loaded Session
(such as GPU memory) to be released.

Signed-off-by: Babis Chalios <mail@bchalios.io>

Do not own memory for SavedModel files

When creating a SavedModel from in-memory data we were taking ownership
of said data. This is problematic, because we do not know how to
deallocate the memory.

Instead of requiring the user to pass us a callback to use for
deallocating, we just do not take ownership of the pointer. This is
fine. We only own the data when we persist such a file, really, but then
we substitute the pointer with the mmaped file, which we do know how to
handle.

Also, update the example of handling SavedModel to cover all of the
relevant API.

Signed-off-by: Babis Chalios <mail@bchalios.io>

gitignore: add ccls directories

Ignore directories used by ccls and other tools for caching compilation
artifacts

Signed-off-by: Babis Chalios <mail@bchalios.io>