Changes to discover and perform azdata update (#11906)

* WIP

* first version with working tests

* fixes needed after merge from main

* Linux untest changes and merge from other changes from mac

* after testing getTextContent

* rename 2 methods

* linux discovery

* tested code on linux

* using release.json for update discovery on linux

* comment added

* dead code removed

* coomments

* revert unrelated change

* revert testing changes

* PR feedback

* remove SendOutputChannelToConsole

* cleanup

* pr feedback

* PR Feedback

* pr feedback

* pr feedback

* merge from main

* merge from main

* cleanup and pr feedback

* pr feedback

* pr feedback.

* pr feedback

Co-authored-by: chgagnon <chgagnon@microsoft.com>

extensions/azdata/yarn.lock

@@ -247,6 +247,13 @@
     "@types/tough-cookie" "*"
     form-data "^2.5.0"
 
+"@types/semver@^7.3.1":
+  version "7.3.1"
+  resolved "https://registry.yarnpkg.com/@types/semver/-/semver-7.3.1.tgz#7a9a5d595b6d873f338c867dcef64df289468cfa"
+  integrity sha512-ooD/FJ8EuwlDKOI6D9HWxgIgJjMg2cuziXm/42npDC8y4NjxplBUn9loewZiBNCt44450lHAU0OSb51/UqXeag==
+  dependencies:
+    "@types/node" "*"
+
 "@types/sinon@^9.0.4":
   version "9.0.4"
   resolved "https://registry.yarnpkg.com/@types/sinon/-/sinon-9.0.4.tgz#e934f904606632287a6e7f7ab0ce3f08a0dad4b1"
@@ -1071,6 +1078,11 @@ semver@^6.0.0, semver@^6.3.0:
   resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
   integrity sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==
 
+semver@^7.3.2:
+  version "7.3.2"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.2.tgz#604962b052b81ed0786aae84389ffba70ffd3938"
+  integrity sha512-OrOb32TeeambH6UrhtShmF7CRDqhL6/5XpPNp2DuRH6+9QLw/orhp72j87v8Qa1ScDkvrrBNpZcDejAirJmfXQ==
+
 should-equal@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/should-equal/-/should-equal-2.0.0.tgz#6072cf83047360867e68e98b09d71143d04ee0c3"