refactor: move examples to common location

Refactor examples into separate binary crates.

Fixes #3111.

Pull-Request: #3509.

.github/workflows/ci.yml

@@ -213,7 +213,7 @@ jobs:
           save-if: ${{ github.ref == 'refs/heads/master' }}
 
       - name: Run ipfs-kad example
-        run: RUST_LOG=libp2p_swarm=debug,libp2p_kad=trace,libp2p_tcp=debug cargo run --example ipfs-kad --features full
+        run: cd ./examples/ipfs-kad/ && RUST_LOG=libp2p_swarm=debug,libp2p_kad=trace,libp2p_tcp=debug cargo run
 
   rustfmt:
     runs-on: ubuntu-latest

Cargo.toml

@@ -142,6 +142,15 @@ libp2p-tcp = { path = "transports/tcp", features = ["tokio"] }
 [workspace]
 members = [
     "core",
+    "examples/chat-example",
+    "examples/dcutr",
+    "examples/distributed-key-value-store",
+    "examples/file-sharing",
+    "examples/identify",
+    "examples/ipfs-kad",
+    "examples/ipfs-private",
+    "examples/ping-example",
+    "examples/rendezvous",
     "misc/metrics",
     "misc/multistream-select",
     "misc/rw-stream-sink",
@@ -180,42 +189,6 @@ members = [
     "interop-tests"
 ]
 
-[[example]]
-name = "chat"
-required-features = ["full"]
-
-[[example]]
-name = "chat-tokio"
-required-features = ["full"]
-
-[[example]]
-name = "file-sharing"
-required-features = ["full"]
-
-[[example]]
-name = "gossipsub-chat"
-required-features = ["full"]
-
-[[example]]
-name = "ipfs-private"
-required-features = ["full"]
-
-[[example]]
-name = "ipfs-kad"
-required-features = ["full"]
-
-[[example]]
-name = "ping"
-required-features = ["full"]
-
-[[example]]
-name = "mdns-passive-discovery"
-required-features = ["full"]
-
-[[example]]
-name = "distributed-key-value-store"
-required-features = ["full"]
-
 # Passing arguments to the docsrs builder in order to properly document cfg's.
 # More information: https://docs.rs/about/builds#cross-compiling
 [package.metadata.docs.rs]