Paddle2ONNX v1.2.6

What's Changed

• [Operator][Update] Split the mixed activation function into independent files by @Zheng-Bicheng in #1313
• [Operator][New] Add einsum by @Zheng-Bicheng in #1314
• [setuptools]Ignore all .h/.cc et.al unrelated files packed into wheel by @Aurelius84 in #1316
• [Remove][Unuseful] Remove unuseful by @Zheng-Bicheng in #1317
• [Remove][Update]Remove custom_ops by @Zheng-Bicheng in #1319
• [Operator][New] Add repeat_interleave op by @jiuyuedeyu156 in #1318
• [Operator][Update] Update export all graph by @Zheng-Bicheng in #1320
• [Operator][New] Add Bitwise Ops by @jiuyuedeyu156 in #1321
• [Build] Rename GetMinOpset by @Zheng-Bicheng in #1322
• [Build]Update Build CI by @Zheng-Bicheng in #1323
• [Operator][New] Add conditional_block select_input by @Zheng-Bicheng in #1324
• [Build]Update command by @Zheng-Bicheng in #1327
• [Operator][Update] Fix greater than op by @jiuyuedeyu156 in #1329
• [Operator][New] Add Unfold Op by @jiuyuedeyu156 in #1325

Full Changelog: v1.2.5...v1.2.6