fix: space in any param name is blocking the loading of the request file in GUI (#2878)

Adjusted Bruno grammar so the `key` element does not disallow spaces (leading and trailing space is still trimmed).

packages/bruno-lang/v2/src/bruToJson.js

@@ -33,7 +33,7 @@ const grammar = ohm.grammar(`Bru {
   stnl = st | nl
   tagend = nl "}"
   optionalnl = ~tagend nl
-  keychar = ~(tagend | st | nl | ":") any
+  keychar = ~(tagend | "\\t" | nl | ":") any
   valuechar = ~(nl | tagend) any
 
    // Multiline text block surrounded by '''

packages/bruno-lang/v2/tests/fixtures/request.bru

@@ -13,6 +13,7 @@ get {
 params:query {
   apiKey: secret
   numbers: 998877665
+  multi word param: is allowed
   ~message: hello
 }
 
@@ -23,6 +24,7 @@ params:path {
 headers {
   content-type: application/json
   Authorization: Bearer 123
+  multi word header: is allowed
   ~transaction-id: {{transactionId}}
 }
 

packages/bruno-lang/v2/tests/fixtures/request.json

@@ -23,6 +23,12 @@
       "type": "query",
       "enabled": true
     },
+    {
+      "name" : "multi word param",
+      "value" : "is allowed",
+      "type": "query",
+      "enabled": true
+    },
     {
       "name": "message",
       "value": "hello",
@@ -47,6 +53,11 @@
       "value": "Bearer 123",
       "enabled": true
     },
+    {
+      "name" : "multi word header",
+      "value" : "is allowed",
+      "enabled": true
+    },
     {
       "name": "transaction-id",
       "value": "{{transactionId}}",