Request support runtime store session instead only on type exit on adk run

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## 🔴 Required Information
adk run may crash unexcepted, but when re-run it, all context is set to none and create a new seesion. This lead to lots of waste token and efficiency.

I just recommd add a new parameter to support saving current seesion on each llm input and output to avoid this issue.

### Is your feature request related to a specific problem?
No

### Describe the Solution You'd Like
adk run --save-session-on-runtime

### Impact on your work
Due to some

### Willingness to contribute
Are you interested in implementing this feature yourself or submitting a PR?
Yes

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## 🟡 Recommended Information

### Describe Alternatives You've Considered
A clear and concise description of any alternative solutions or workarounds
you've considered and why they didn't work for you.

### Proposed API / Implementation
If you have ideas on how this should look in code, please share a
pseudo-code example.

### Additional Context
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