store inspection injectable dependencies as type alias

feat: tuple map bindings + lambda resolvers (#6)

* feat: use variant bindings in container's symbol map

This support faster lookup speeds as we are no longer using `std::any`.

* reduce test flake across platforms

* update single_includes

* fix: windows optimize copts

* docs: remove old api

* lower the bar a bit (speed test)

* refactor: tuple >>> map + variant (for binding map)

* remove unused include

* only use container.template get... call when necessary

* add consumed std types

* fix: allow for duplicate symbol types + allow struct symbols

* docs: refer to the containerless branch

* test: use catch2 BENCHMARK

* refactor: remove resolver classes

* remove unused meta structs

* refactor: cache/constant resolver lambdas

* fix: codacy extra newline

Revert "remove static from injectables"

This reverts commit 8c3fbfd.

docs: fix formatting issue

cleanup forward declarations

docs: fix badge

extra newline (single_include)