Move all ink! crates into the crates directory (#494)

* [*] move all ink! crates into crates/ directory

* [ci] adjust .gitab-ci.yml to crates/ directory

* [ci] fix GitLab .gitlab-ci.yml (attempt #2)

* [ci] forgot some lines in attempt #2

* [examples] fix example smart contracts

They need to readjust their paths for the crates/ directory.

.gitlab-ci.yml

@@ -61,7 +61,7 @@ check-std:
   <<:                              *docker-env
   script:
     - for crate in ${ALL_CRATES}; do
-        cargo check --verbose --all-features --manifest-path ${crate}/Cargo.toml;
+        cargo check --verbose --all-features --manifest-path crates/${crate}/Cargo.toml;
       done
 
 check-wasm:
@@ -69,7 +69,7 @@ check-wasm:
   <<:                              *docker-env
   script:
     - for crate in ${ALL_CRATES}; do
-        cargo check --verbose --no-default-features --target wasm32-unknown-unknown --manifest-path ${crate}/Cargo.toml;
+        cargo check --verbose --no-default-features --target wasm32-unknown-unknown --manifest-path crates/${crate}/Cargo.toml;
       done
 
 
@@ -82,7 +82,7 @@ build-std:
     - check-std
   script:
     - for crate in ${ALL_CRATES}; do
-        cargo build --verbose --all-features --release --manifest-path ${crate}/Cargo.toml;
+        cargo build --verbose --all-features --release --manifest-path crates/${crate}/Cargo.toml;
       done
 
 build-wasm:
@@ -92,7 +92,7 @@ build-wasm:
     - check-wasm
   script:
     - for crate in ${ALL_CRATES}; do
-        cargo build --verbose --no-default-features --release --target wasm32-unknown-unknown --manifest-path ${crate}/Cargo.toml;
+        cargo build --verbose --no-default-features --release --target wasm32-unknown-unknown --manifest-path crates/${crate}/Cargo.toml;
       done
 
 test:
@@ -143,7 +143,7 @@ clippy-std:
     - check-std
   script:
     - for crate in ${ALL_CRATES}; do
-        cargo clippy --verbose --all-features --manifest-path ${crate}/Cargo.toml -- -D warnings;
+        cargo clippy --verbose --all-features --manifest-path crates/${crate}/Cargo.toml -- -D warnings;
       done
 
 clippy-wasm:
@@ -153,7 +153,7 @@ clippy-wasm:
     - check-wasm
   script:
     - for crate in ${ALL_CRATES}; do
-        cargo clippy --verbose --no-default-features --manifest-path ${crate}/Cargo.toml --target wasm32-unknown-unknown -- -D warnings;
+        cargo clippy --verbose --no-default-features --manifest-path crates/${crate}/Cargo.toml --target wasm32-unknown-unknown -- -D warnings;
       done
 
 fmt:

Cargo.toml

 [workspace]
 members = [
-    "metadata",
-    "alloc",
-    "core",
-    "core/derive",
-    "lang",
-    "lang/macro",
-    "lang/ir",
-    "lang/codegen",
-    "prelude",
-    "primitives",
+    "crates/metadata",
+    "crates/alloc",
+    "crates/core",
+    "crates/core/derive",
+    "crates/lang",
+    "crates/lang/macro",
+    "crates/lang/ir",
+    "crates/lang/codegen",
+    "crates/prelude",
+    "crates/primitives",
 ]
 exclude = [
     "examples/",