[QNN EP] Support 1D Conv/ConvTranspose (#16563)
### Description
- Adds support for 1D (rank 3) convolutions to QNN EP
- Implements 1D convolutions as 2D convolutions with height == 1.
Reshape nodes are added at the inputs and outputs as necessary.
- Adds more unit tests for Conv and ConvTranspose (2D and 1D).
### Motivation and Context
Allow more models to run on QNN EP.
