Do not hardcode the versions in the template

[lu-zero]

• Use variables to define software versions in our templates. These variables should be defined in the config.toml file for each language. Do not add these variable as CLI options, since too many options in a CLI could lead to confusion.
• Define the default values, if no config values are passed, here. This definition should be moved inside the library and created a copy for each language. A better solution would be identify the options common among langages and then modify only the different ones.

An example of software versions for cargo:

cargo/github-docker-application.yml:        CROSS_VERSION: v0.2.5
cargo/github-docker-application.yml:        MANIFEST_VERSION: v0.2.0
cargo/github-docker-application.yml:        GRCOV_VERSION: v0.8.13
cargo/github.yml:        RCA_VERSION: v0.0.25
cargo/github.yml:        GRCOV_VERSION: v0.8.13
cargo/github.yml:        GRCOV_VERSION: v0.8.13
cargo/github.yml:        GRCOV_VERSION: v0.8.13
cargo/github.yml:        GRCOV_VERSION: v0.8.13
cargo/github.yml:        WCC_VERSION: v0.2.0
cargo/github.yml:        GRCOV_VERSION: v0.8.13
cargo/github.yml:        WCC_VERSION: v0.2.0
cargo/github.yml:        GRCOV_VERSION: v0.8.13
cargo/github.yml:        WCC_VERSION: v0.2.0
cargo/github.yml:        DENY_VERSION: 0.13.7
cargo/github.yml:        UDEPS_VERSION: v0.1.35
cargo/github.yml:        DENY_VERSION: 0.13.7
cargo/github.yml:        UDEPS_VERSION: v0.1.35
cargo/github.yml:        DENY_VERSION: 0.13.7
cargo/github.yml:        UDEPS_VERSION: v0.1.35
cargo/github.yml:        VALGRIND_VERSION: 2.1.0
cargo/github.yml:        CAREFUL_VERSION: 0.3.4
cargo/github.yml:        CAREFUL_VERSION: 0.3.4
cargo/github.yml:        CAREFUL_VERSION: 0.3.4
cargo/github.yml:        FUZZ_VERSION: 0.11.2
cargo/github.yml:        FUZZ_VERSION: 0.11.2
maven/github.yml:      RCA_VERSION: v0.0.25
meson/github.yml:      RCA_VERSION: v0.0.25
poetry/github.yml:      RCA_VERSION: v0.0.25