Use generic variables for orgs and enterprises

The existing variables are too specific to the GitHub org. This commit
addresses this in the following files:

- org-repos-fragment-directive-2.graphql
- org-repos-fragment-directive.graphql

---

In addition, the following files have references to variable usage, but
was not explicitly declared anywhere:

- enterprise-saml-identities.graphql
- org-branches-and-commits-by-repository.graphql
- org-members-by-team.graphql
- org-pr-merged-info-by-repository.graphql
- repo-get-all-branches.graphql
- repos-get-last-issue-comment.graphql

I've updated the above files to just use simple strings to replace prior
to using the queries in them.

Author: jusuchin85

graphql/queries/enterprise-saml-identities.graphql

@@ -3,8 +3,8 @@
 # If the Identity Provider has sent an `emails` attribute/value in a previous SAML response for enterprise member(s), it also possible to add the `emails` attribute in the `samlIdentity` section right below `nameID` and query for this SAML identity attribute value as well. 
 # If there are a large number of identities/users (greater than 100), pagination will need to be used. See https://graphql.org/learn/pagination/ for details on pagination. There is an example of pagination in simple-pagination-example.graphql.
 
-query listSSOUserIdentities($enterpriseSlug: String!) {
-  enterprise(slug: $enterpriseSlug) {
+query listSSOUserIdentities {
+  enterprise(slug: "ENTERPRISE_SLUG") {
     ownerInfo {
       samlIdentityProvider {
         externalIdentities(first: 100) {

graphql/queries/org-branches-and-commits-by-repository.graphql

@@ -1,7 +1,7 @@
-query getCommitsByBranchByRepo($orgName:String!, $repoName:String!) {
-  organization(login:$orgName) {
+query getCommitsByBranchByRepo {
+  organization(login: "ORGANIZATION_SLUG") {
     name
-    repository(name:$repoName) {
+    repository(name: "REPO_NAME") {
       name
       refs(refPrefix: "refs/heads/", first: 10) {
         nodes {

graphql/queries/org-members-by-team.graphql

@@ -1,8 +1,8 @@
-query getMembersByTeam($orgName: String!, $teamName: String!) {
-  organization(login: $orgName) {
+query getMembersByTeam {
+  organization(login: "ORGANIZATION_SLUG") {
     id
     name
-    teams(first: 1, query: $teamName) {
+    teams(first: 1, query: "TEAM_NAME") {
       edges {
         node {
           id

graphql/queries/org-pr-merged-info-by-repository.graphql

@@ -1,5 +1,5 @@
-query getRepoMergedPRDetails($orgName: String!, $repoName: String!) {
-  repository(owner: $orgName, name: $repoName) {
+query getRepoMergedPRDetails {
+  repository(owner: "ORGANIZATION_SLUG, name: "REPO_NAME") {
     pullRequests(first: 100, states: MERGED) {
       pageInfo {
 				endCursor #use this value in the pullRequests argument list

graphql/queries/org-repos-fragment-directive-2.graphql

@@ -1,5 +1,5 @@
 query orgInfo($showRepoInfo: Boolean!) {
-    organization(login: "github") {
+    organization(login: "ORGANIZATION_SLUG") {
         ...orgFrag
     }
 }

graphql/queries/org-repos-fragment-directive.graphql

@@ -1,5 +1,5 @@
 query orgInfo($showRepoInfo: Boolean!) {
-    organization(login: "github") {
+    organization(login: "ORGANIZATION_SLUG") {
         login
         name
         repositories @include(if: $showRepoInfo) {

graphql/queries/repo-get-all-branches.graphql

@@ -1,6 +1,6 @@
-query getExistingRepoBranches($orgName: String!, $repoName: String!) {
-  organization(login: $orgName) {
-    repository(name: $repoName) {
+query getExistingRepoBranches {
+  organization(login: "ORGANIZATION_SLUG") {
+    repository(name: "REPO_NAME") {
       id
       name
       refs(refPrefix: "refs/heads/", first: 10) {

graphql/queries/repos-get-last-issue-comment.graphql

@@ -1,5 +1,5 @@
-query getRepoIssue($orgName: String!, $repoName: String!) {
-  repository(owner: $orgName, name: $repoName) {
+query getRepoIssue {
+  repository(owner: "ORGANIZATION_SLUG", name: "REPO_NAME") {
     issues(last: 1) {
       edges {
         node {