Move sp-npos-elections-solution-type to frame-election-provider-support (#11016)

* Move `sp-npos-elections-solution-type`
to `frame-election-provider-support`
First stab at it, will need to amend some more stuff

* Fixing tests

* Fixing tests

* Fixing cargo.toml for std configuration

* fmt

* Committing suggested changes
renaming, and re exporting macro.

* Removing unneeded imports

substrate/Cargo.lock

@@ -2160,10 +2160,26 @@ dependencies = [
  "sp-trie",
 ]
 
+[[package]]
+name = "frame-election-provider-solution-type"
+version = "4.0.0-dev"
+dependencies = [
+ "parity-scale-codec",
+ "proc-macro-crate 1.1.0",
+ "proc-macro2",
+ "quote",
+ "scale-info",
+ "sp-arithmetic",
+ "sp-npos-elections",
+ "syn",
+ "trybuild",
+]
+
 [[package]]
 name = "frame-election-provider-support"
 version = "4.0.0-dev"
 dependencies = [
+ "frame-election-provider-solution-type",
  "frame-support",
  "frame-system",
  "parity-scale-codec",
@@ -2176,6 +2192,21 @@ dependencies = [
  "sp-std",
 ]
 
+[[package]]
+name = "frame-election-solution-type-fuzzer"
+version = "2.0.0-alpha.5"
+dependencies = [
+ "clap 3.0.7",
+ "frame-election-provider-solution-type",
+ "honggfuzz",
+ "parity-scale-codec",
+ "rand 0.8.4",
+ "scale-info",
+ "sp-arithmetic",
+ "sp-npos-elections",
+ "sp-runtime",
+]
+
 [[package]]
 name = "frame-executive"
 version = "4.0.0-dev"
@@ -10058,7 +10089,6 @@ dependencies = [
  "serde",
  "sp-arithmetic",
  "sp-core",
- "sp-npos-elections-solution-type",
  "sp-runtime",
  "sp-std",
  "substrate-test-utils",
@@ -10077,21 +10107,6 @@ dependencies = [
  "sp-runtime",
 ]
 
-[[package]]
-name = "sp-npos-elections-solution-type"
-version = "4.0.0-dev"
-dependencies = [
- "parity-scale-codec",
- "proc-macro-crate 1.1.0",
- "proc-macro2",
- "quote",
- "scale-info",
- "sp-arithmetic",
- "sp-npos-elections",
- "syn",
- "trybuild",
-]
-
 [[package]]
 name = "sp-offchain"
 version = "4.0.0-dev"