#851: replaced script with binary

[jan-vcapgemini]

Fixes: #851

Implements:

• replaced idea.sh with idea
• replaced studio.sh with studio
• added checks for old versions to fallback to idea/studio.sh

[salimbouch]

LGTM, you have a build error tho

[coveralls]

Pull Request Test Coverage Report for Build 12237539704

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 67.069%

---

Totals
Change from base Build 12236799868:	0.03%
Covered Lines:	6613
Relevant Lines:	9513

---

💛 - Coveralls

[hohwille]

@jan-vcapgemini thanks for the PR and fixing these problems. Great work 👍
I am quite confident that we now have found a good approach. This will also fix #808

Only if Jetbrains ships many more releases and every time changes things here and we reach a state where our code needs to consider the INTELLIJ_VERSION to determine the binary name then we should have stayed with the old approach.
In the end Jetbrains is already going in the direction we prefer only that the tool is called intellij but they use the internal name idea and that is not the binary name.
Assuming on windows there would also be a idea.exe instead of idea64.exe we would not need such quirks.