fix(versions): cli + api use a single base version

That way we get rid of the duplication at least.
Probably it would be enough to just refer to version 1 of the
library respectively, and let semver do the rest.

etc/api/shared.yaml

@@ -65,14 +65,8 @@ directories:
   mako_src: src/mako
   # The subdirectory to contain documentation from all APIs and related programs
   doc_subdir: doc
-# This somewhat intricate setup allows the CLI to access certain cargo-API values,
-# without having us duplicate them.
-cargo_api: &cargo_api
-  build_version: "1.0.0"
 cargo:
-  # This means that the API must not specify the shared variables from cargo_api
-  # anymore
-  <<: *cargo_api
+  build_version: "1.0.0"
   repo_base_url: https://github.com/Byron/google-apis-rs
   authors:
     # don't forget to possibly add them to copyright authors

etc/api/type-api.yaml

@@ -25,7 +25,6 @@ make:
     - source: build.rs
       output_dir: src
 cargo:
-  build_version: "1.0.0"
   build_script: src/build.rs
   keywords: [protocol, web, api]
   doc_base_url: https://docs.rs

etc/api/type-cli.yaml

@@ -23,7 +23,6 @@ make:
     - source: main.rs
       output_dir: src
 cargo:
-  build_version: "1.0.0"
   keywords: [cli]
   is_executable: YES
   doc_base_url: http://byron.github.io/google-apis-rs

src/mako/Cargo.toml.mako

@@ -48,8 +48,7 @@ ${dep}
   
   if make.depends_on_suffix is not None:
     crate_name_we_depend_on = library_to_crate_name(api_name, suffix=make.depends_on_suffix)
-    depends_on_key = 'cargo_' + make.depends_on_id
-    crate_version_we_depend_on = self.context.get(depends_on_key).get('build_version')
+    crate_version_we_depend_on = cargo.build_version
     nightly_features.append(crate_name_we_depend_on + '/nightly')
     default_features.append(crate_name_we_depend_on + '/with-serde-codegen')
 %>\