Adds functionality on space factory to do an NFT check before creating a space (#1526)

This PR does a couple of things:
1. Adds a flag on `spaceFactory` to check if the `createSpace` function
is gated by a token address
2. Adds a flag on `spaceFactory` to pause the protocol when making
changes like updating the implementations or enabling the token gating
checks; if the protocol is paused, it will also prevent creating new
spaces.

---------

Co-authored-by: Tak Wai Wong <64229756+tak-hntlabs@users.noreply.github.com>

zion/contracts/goerli_space_factory/space-factory.json

@@ -1,4 +1,5 @@
 {
   "spaceFactory": "0x173b6a4Ec998A0e72656e0fc9Af2408B017C12f9",
-  "spaceToken": "0xD7efA82c6CEa706B396F4FfA23f0D01726F675cc"
+  "spaceToken": "0xD7efA82c6CEa706B396F4FfA23f0D01726F675cc",
+  "pioneerToken": ""
 }

zion/contracts/localhost_space_factory/space-factory.json

@@ -1,4 +1,5 @@
 {
   "spaceFactory": "0xA51c1fc2f0D1a1b8494Ed1FE312d7C3a78Ed91C0",
-  "spaceToken": "0xa513E6E4b8f2a923D98304ec87F64353C4D5C853"
+  "spaceToken": "0xa513E6E4b8f2a923D98304ec87F64353C4D5C853",
+  "pioneerToken": ""
 }