fix: configurable runner tool cache + disabled by default

Runner tool cache can fill up the disk space (e.g. for LLVM), so it is disabled by default

Author: aminya

action.yml

@@ -3,6 +3,9 @@ description: "Install all the tools required for building and testing C++/C proj
 author: "Amin Yahyaabadi"
 
 inputs:
+  cache-tools:
+    description: "If should cache the installed tools? (Default: false)"
+    required: false
   compiler:
     description: "The compiler to use and its optional version separated by - e.g. llvm-13.0.0"
     required: false

dist/actions/setup-cpp.js

@@ -9,6 +9,7 @@ describe("setup-cmake", () => {
   let directory: string
   beforeAll(async () => {
     directory = await setupTmpDir("cmake")
+    process.env.CACHE_TOOLS = "true"
   })
 
   it("should setup CMake", async () => {

dist/actions/setup-cpp.js.map

@@ -14,6 +14,7 @@ describe("setup-ninja", () => {
   let directory: string
   beforeEach(async () => {
     directory = await setupTmpDir("ninja")
+    process.env.CACHE_TOOLS = "true"
   })
 
   it("should setup Ninja", async () => {

dist/legacy/setup-cpp.js

@@ -8,6 +8,7 @@ describe("setup-task", () => {
   let directory: string
   beforeAll(async () => {
     directory = await setupTmpDir("task")
+    process.env.CACHE_TOOLS = "true"
   })
 
   it("should setup task", async () => {